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L.B.M. Magnier

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Service design for the adoption of reusable packaging for online retail

The growth of e-commerce has sharply increased packaging waste, and reusable packaging systems (RPS) are positioned as a circular alternative to single-use cardboard. Their environmental and economic viability depends on people's engagement, achieving a high return rate to complete the intended packaging cycles. However, these systems are not preferred by people since they are considered too novel, uncertain, and too much effort demanding in exchange for the perceived benefits.

This thesis, developed with Circular Shipping Company, investigates how reusable packaging systems for online retail can be designed to increase user participation and return rates. The research combined a literature review with two user studies. In the first, ten participants navigated recreated checkout websites to examine how packaging is selected in an online setting. In the second, participants received a real reusable box and returned it to an actual drop-off point, allowing real return behaviour to be observed. The studies identified several barriers in the system, which were then grouped and rephrased into four pillar requirements that guided the rest of the project: Value communication, sustainable education, Guidance, and Convenience.

An individual ideation phase, a co-design session with users, and a brainstorming session with the company were carried out, resulting in a service design with eight design interventions covering the full consumer journey. The proposal embeds packaging selection into the checkout flow, distributes explanations across touchpoints, locates returns to mailboxes in supermarkets, and makes the reuse cycle visible through a travelling character and its journey.

The design was validated through a survey (n=51) and semi-structured interviews (n=10). Guidance and convenience were achieved, while value communication and sustainable education were only partially achieved: environmental impact information continued to trigger scepticism, and participants struggled to perceive a personal benefit in using reusable packaging. Overall, the findings show that selection is mainly guided by anticipated effort, while return depends on routine fit.

Showcase video - E-commerce reusable packaging service design: https://youtu.be/lim6jWRxHkI?si=1DnBbaM_tyndfuWB
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Master thesis (2026) - A. Dietvorst, L.B.M. Magnier, R. Mugge
Extending the lifetime of household appliances is essential to reduce electronic waste and support a transition towards a circular economy. Despite this, many consumers remain reluctant to repair appliances when malfunctions occur, often opting for replacement instead. This thesis investigates how product design can increase consumers’ willingness to repair household appliances, focusing on the ATAG oven.

The research combines three complementary parts: a literature review on repair behaviour, a product analysis of the oven, and consumer research on perceptions of self-repair. The product analysis identified common malfunctions and disassembly sequences, while the consumer study revealed a strong polarisation between users willing and unwilling to repair. Two key factors emerged: effort justification and the perceived risk of causing further damage. Together, these insights indicate that design interventions should focus on convincing users that repair is worthwhile, reassuring them about potential risks, and supporting them throughout the process.

Based on these insights, the concept Moment of Care was developed. It integrates small, guided maintenance interactions into the product experience, making expected maintenance actions explicit and accessible. By structuring these into manageable steps, the concept clarifies what is required from users while gradually building familiarity and reducing perceived complexity.

A scenario-based evaluation indicates that this approach makes maintenance and repair more approachable and clarifies the user’s role in product upkeep. Embedding such interactions into everyday use reframes repair as a normal part of ownership rather than a rare technical intervention, supporting longer product lifetimes and more circular appliance use. ...

Deanimalising Our Diets to Foster the Protein Transition

Master thesis (2025) - I. Bernal Leal, L.B.M. Magnier, A.L. Peeters, C. van Dooren, S. Wetzer
The global food system is facing increasing pressure to transition away from animal-based proteins due to environmental, ethical, and health-related concerns. In the Netherlands, this protein transition is gaining momentum, yet remains hindered by deeply rooted consumption patterns and cultural norms. This project, in collaboration with WWF-NL, investigates how systemic design can support the reduction of animal-based food consumption among Dutch consumers, focusing on the TU Delft campus as a representative context of study. WWF-NL recognizes the urgency of transforming food systems, aligning its strategy with the protein transition to reduce environmental impact and restore biodiversity. Despite public awareness, key challenges persist: policy implementation is slow, market incentives are misaligned, and individual behaviour change is difficult to sustain. Drawing from WWF’s own findings, the project explores why conventional interventions, such as awareness campaigns, often fall short and asks: what else is needed to realise meaningful dietary shifts? To answer this, the project frames the transition not just as a behavioural issue, but as a systemic challenge embedded in narratives, routines, and relationships. The research uncovers dominant and counter narratives through interviews, observations, and workshops. These insights are then translated into six systemic barriers that slow down change on campus, including social norms, infrastructural gaps, and emotional disconnection from the food system. These barriers operate across multiple levels and often reinforce each other through feedback loops. In response, this project concludes with a portfolio of seven interventions. Some restructure the food environment to enable more sustainable choices through nudging and increased visibility. Others engage individuals more deeply by fostering reflection, emotional connection, and collective identity. The interventions are intentionally non-prescriptive and adaptable, designed to tap into existing structures and shift them from within. This degrowth-oriented strategy avoids introducing new products or services, focusing instead on redirecting current resources toward supporting the transition. First validations confirmed that the interventions resonate across actors and levels. Students connected through stories, sensory experiences, and shared spaces, while institutional stakeholders valued the alignment with sustainability goals and the practical feasibility of some of the interventions. Rather than offering a one-size-fits-all solution, this project aims to start an uncomfortable conversation and open space for experimentation, participation, and narrative change. By guiding consumers through a journey of discovery, unlearning, and letting go, this strategy moves beyond shortterm gains and towards long-term cultural shifts. ...
Master thesis (2025) - S. Chiarelli, L.B.M. Magnier, Kyenno Scheepers
Disposable packaging waste is a significant environmental challenge. Reusable packaging offers a potential solution by keeping materials in circulation for a longer period, therefore reducing overall waste.

This project explores the feasibility of reusable packaging for the soft fruit sector, which faces unique challenges due to the delicate nature of the fruits and their high susceptibility to spoilage. Research indicated that strawberries are a suitable candidate for reusable packaging, as they can be locally sourced and they are in high demand.

The primary goal of the study is to design a packaging that can be reused beyond its environmental break-even point while meeting the essential requirements of protecting the fruit. A strong focus is also placed on user experience, investigating how the packaging can be made desirable compared to disposable alternatives and how its continued use can be encouraged.

Extensive research on material properties and user preferences was conducted through literature reviews and interviews with experts to understand the context and develop a list of requirements. A Morphological Chart supported concept generation, followed by a user test for concept selection. Finally, an ergonomics test combined with an evaluation using Pugh’s Scoring Matrix guided the development of the final concept: a square, nestable container with a transparent lid.

The design optimizes ease of handling, aesthetic appeal, and logistical efficiency while balancing user needs, cost, and durability to ensure the packaging can be reused well beyond its break-even point. ...

Can good ancestry stimuli inspire pro-environmental attitudes?

Master thesis (2025) - J.N. Slob, R. Bendor, L.B.M. Magnier
This research examines whether Good Ancestry—understood as the conscious stewardship of what we value beyond our own lifetime—can motivate sustainable consumer behaviour. It asks whether making needs for legacy and long-term responsibility more salient can strengthen the perceived value of sufficiency over unsustainable consumption. The central question is whether Good Ancestry stimuli can inspire pro-environmental attitudes.
The first part establishes the theoretical foundation by linking ancestry, climate change, and consumer behaviour. Drawing on Krznaric’s six ways of thinking long-term together with Value–Belief–Norm theory and attitude formation (Krznaric, 2020; Stern et al., 1999; Blythe, 2013), it positions sufficiency as the behavioural target and identifies moral and temporal responsibility as key motivational levers. The second part translates this framework into practice through the Good Ancestry Stimuli Method and the design of ancestry-framed and non-ancestry video conditions. Abstract notions of deep time and legacy were rendered into concise, emotionally engaging narratives through iterative user testing, ensuring conceptual clarity and theoretical alignment. The third part evaluates the stimuli through three studies.
Study 1 shows that ancestry stimuli significantly strengthen the Good Ancestry mindset, particularly its normative components of long-term responsibility. Study 2 finds that Good Ancestry correlates with Concern for Future Consequences but not with environmental worldview or pro-environmental attitudes, while generally high GA scores suggest a latent readiness for legacy-oriented responsibility. Study 3 shows no attitudinal difference resulting from ancestry stimuli, indicating that moral activation does not directly translate into attitude shifts.
The research concludes that ancestry framing can activate intergenerational moral reflection but, in its current form, does not increase pro-environmental attitudes. It offers a theoretical and methodological foundation for future work linking good ancestry with sustainable behaviour. ...
Master thesis (2025) - R.A. Tokromo, L.B.M. Magnier, S. Parisi, Marjolein Vendrig
This master’s thesis investigates how to improve product care practices for Technical Outdoor Garments (TOG) among consumers. Working with Bever, the Netherlands’ leading outdoor retailer, the research examines ways to extend product lifespans through better maintenance. The study identifies key barriers preventing proper TOG care and develops The Buitenmens Sherpa, a solution to make TOG care more accessible and routine.

The thesis provides a comprehensive overview of TOG, including waterproof, down-filled, and synthetic-fill garments, as well as the importance of Durable Water Repellent (DWR) treatments. It examines current product care practices, the role of care labels, and the specific washing and drying requirements for TOG. The research utilizes the Fogg Behavior Model to analyze consumer behavior regarding product care and explores related work in the field of sustainable consumption..

By examining Bever’s sustainability initiatives, consumer behavior patterns, and circular economy principles, this thesis proposes a notification system that reminds users when TOG need care and makes the maintenance process more accessible. This solution aims to maximize garment longevity, minimize environmental impact, and advance circular economy practices in outdoor apparel. ...
Master thesis (2024) - H.S. Sinnige, L.B.M. Magnier, S. Nikou
Due to economic prosperity and population growth, consumption levels have increased particularly in affluent regions, surpassing planetary boundaries and causing significant ecological damage. Recently, researchers have advocated for a sufficiency approach, which aims to reduce consumption to essential levels only fulfilling basic needs. One example of a sufficiency behaviour is the re-use of food leftovers. Food waste reduction behaviours, in particular eating leftovers, are very exemplary measures to take to reach a sufficient lifestyle. By eating leftovers, less new food needs to be bought, bringing down the level of consumption. This thesis explores the drivers and barriers to re-using food leftovers and defines strategies for designing effective interventions. A literature review informed the creation of a initial conceptual model based on the Theory of Planned Behavior, Norm Activation Model, and other frameworks.

To evaluate if the initial model should be adjusted, interviews were conducted. These interviews were analysed using Thematic Analysis, revealed three themes: (1) difficulties of organizing, (2) doing the right thing, and the (3) ascribed value of leftover food. After the model had a final configuration, the model was tested through PLS-SEM, confirming six out of seven hypotheses and identifying five key factors: (1) attitudes, (2) personal norms, (3) skills, (4) awareness of consequences, and (5) perceived health risks. Household organization emerged as an additional critical factor from the interviews.

Design strategies were formulated for each of these six areas, focusing on positive perceptions, ethical beliefs, food safety confidence, skill improvement, and organizational support. An ideation session with design students generated six intervention concepts, which were further developed by the researcher. By addressing these key areas, the proposed interventions aim to foster sustainable behaviors and significantly reduce food waste. This research highlights the importance of rethinking food consumption and waste, promoting a culture of sufficient consumption. ...
Master thesis (2023) - A.I. Hollestelle, S.S. Mulder, L.B.M. Magnier
Royal Delft Museum is the museum for Delftware in the Netherlands. It has opened its’ renovated doors in the midst of the pandemic and is mostly populair among foreign visitors. Recently, they have also expressed their wish to better cater to the interests and needs of the domestic public as well. This sparked the opportunity for this thesis project: increasing the attractiveness of Royal Delft Museum for domestic visitors. Extensive research has been done and resulted in several design guidelines which can be found at the end of every chapter. These guidelines were used for the final design.

The project started with an initial exploration of the context of Royal Delft Museum and their customer journey. Secondly, a theoretical framework about museum visitors and their reasons for visiting a museum was developed. Additional research has been conducted to discover more about the societal impact museums have and what challenges they want to overcome in the future.

Data has been gathered about the visitors that have been visiting Royal Delft Museum in order to determine which domestic target group proved the most promising to attract, and thus, which people to interview. Interviews were conducted using the contextmapping method and the insights were clustered. Ideas were iteratively developed and two creative sessions were held; one with the museum, the other one with a group of IDE students.

This eventually lead to a strategic roadmap and the final concept Transform. Transform is an open, creative space which can best be described as a combination of an artist-in-residency and a space for future museum development. The main purpose of Transform is to provide a platform which showcases more diverse perspectives and cultural expressions on a variety of topics linked to ceramics.
Transform is a space which allows for collaborations between artists and the museum. Through Transform, the museum is able to facilitate a space which is beneficial for the museum as well as artists and visitors. It helps the museum to better understand their visitors and to cater to their needs and beliefs. It gives artists a platform and interactions with visitors.

In the validation phase, the designed meaning of Transform and its desirability were tested through interviews with participants. These were among the same participants who also took part in the contextmapping interviews.
The meaning proved to be communicated well; The participants thought Transform was a valuable addition to the museum because it provided a new perspective on the museum experience due to its innovative character. It was found that experimenting with and promoting the events in Transform were crucial for it to be a succes.

In the discussion and conclusion the results are reviewed based on the impact Transform could have on attracting visitors. Things to do differently next time are addressed. Finally, recommendations are formulated for future development of Transform by Royal Delft Museum. ...

Designing a game that facilitates the discovery of each other's intimacy

Master thesis (2023) - K. Clé, A. Sönmez, L.B.M. Magnier
The objective of this project was to design a game that facilitates the discovery of each other’s intimacy. To be even more specific the goal was to create an interactive game that makes it easier for people to talk about their intimacy in an open, non-judgmental and playful way. Eventually, by playing this threshold lowering and accessible game, it helps people to discover each other in terms of intimacy and which would hopefully increase people’s sexual pleasure. ...

Enable customers to act according to values in line with the food transition when online grocery shopping at Picnic

Master thesis (2022) - A.E.W. van Elteren, L.B.M. Magnier, A.L. Peeters, P.P.M. Hekkert, E. Oosterlaken
A transition towards a sustainable food system needs to happen to ensure people can live a healthy life on this planet. Picnic as a retailer in the food system is the bridge between producers and consumers of food products. Many people hold values which are in line with the food transition, which means they care for others, the environment, and their health. During the purchase of food however, these values are not always acted upon. This can be described as a value-action gap. There is an opportunity for Picnic to support customers in closing the value-action gap for food-transition friendly grocery shopping.

There is a knowledge gap around what the values are that are important to Dutch customers when online grocery shopping, and which hurdles are present in the service of Picnic to foster the food transition. An exploratory study amongst Picnic customers shows the hurdles are formed by a lack consideration, confidence, and information. Furthermore, other values can be more important and there can be hesitancy towards change. To overcome these, dedicated moments should be created in the shopping journey to consider values. The design statement therefore is:

I want to design an experience for Picnic customers who have values in line with the food transition but do not fully act upon them, by providing them with a moment to reflect and adapt so they can become proud of their actions.

To design an experience for Picnic customers that allows for the desired behaviour, an iterative design process is used. During this process, four design guidelines are uncovered: interventions for reflection on food decisions should be controlled, specific, goal-oriented, and quick.

The final proposed intervention is a Betere Boodschappen functionality, where customers get control over their shopping environment. They reflect on their values through answering three questions and based on those answers get personal suggestions for functionalities that can help them pay more attention to their values. A mixed method study, consisting of a quantitative between-group study and qualitative interviews, is used to test the effect of the intervention. There is a positive significant effect on behaviour and behavioural control over buying sustainable groceries. Customers furthermore indicate that doing better groceries is made easier for them through the functionality, and the store feels more personal. A plan for implementation of the functionality in steps is proposed, and recommendations are made to others designing for transitions inside a business. ...
In the current moment in time, the interest in sustainability is growing. Companies need to transition towards a more sustainable business model. One of the ways to do this is to become more circular.

The circular economy is an economic system aimed at eliminating waste and on the continuous reuse of resources. The end goal is to get rid of all the waste and, in this way, get lower carbon emissions.

With the production of built-in products for recreational vehicles, like motorhomes and caravans, Thetford creates much waste together with the rest of the market, such as packaging and recyclable parts. During their operations, they are not conscious of the effect which their operations have.

With the growing interest in sustainability, new laws are coming. The government will levy more taxes for carbon emissions and non-circular business operations. Waste, transportation and raw materials will become more expensive due to these new legislations and other external influences.

Besides this, there is a shifting interest from the end-user to more sustainable options. This creates a pull towards sustainability for Thetford, their customers and their suppliers. If Thetford does not change, this will already affect their business operations in the short term.

This project includes a design approach for a five-year strategy to make Thetford’s cassette toilets circular. The process is done in collaboration with as many Thetford employees as possible and with other designers. From this, I derived as a designer multiple relevant ideas. These ideas are tested within qualitative research with Thetford’s current and future target audience.

Another validation is done based on the direct customer’s interests in sustainability. The last validation is done for the interests of Thetford themselves. This validation is based on the investment costs of Thetford, the effect on the carbon emissions which the ideas have, and the extra revenue for the first five years that Thetford can make.

Based on these three types of validation, a hierarchy is created for all the ideas. To derive a logical strategy from this. Within the strategy, essential and desirable activities are distinguished. To get a better overview for Thetford on which activities it is most important to focus. A timing framework is created based on the mentioned information to create a clear five-year plan for Thetford.

The strategy shows that Thetford needs to start by being more transparent towards its consumers. This transparency is crucial for the trust their consumers have in Thetford. To become more transparent, Thetford needs to be more conscious about its sustainable choices. The second phase of the strategy is about closing the loop. The two main activities for this are switching to recycled plastic and setting up a recycling system. The strategy will be concluded with a refurbishing system to slow the loop in the third phase.

The project concludes with a design evaluation, conclusion, discussion and a personal reflection.
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Master thesis (2021) - C.K. Geerse, J.P.L. Schoormans, L.B.M. Magnier, J.P.M. de Koning
As society, we have lost connection to our food and how it is produced. The international market in which Dutch farmers operate has elongated the path from farm to fork and created an anonymous food chain. Food production has been intensified over the years with agriculture practices evolving with a focus on efficiency and high yields. This has resulted in a highly polluting sector that is responsible for 34% of human caused greenhouse gas emissions (Crippa et al., 2021). The current agri-food system is therefore environmentally and socially unsustainable. Alternative food systems are being explored which might offer a solution to these challenges. The implementation of nature inclusive farming focuses on realizing an agriculture sector that integrates food production and nature preservation. Project client Caring Farmers aims to stimulate nature inclusive farming in order to tackle the environmental and societal challenges of the agri-food system. The design challenge of this project was: How can the transition towards a nature inclusive agri-food sector in the Netherlands be accelerated through the enhancement of the relation between farmer and consumer? With a systemic design approach and qualitative research, it was concluded that the role of the agri-food sector is changing. An opportunity exists to reintegrate farming in society and create a system that expands its focus for farming beyond economic production towards its societal relevance. The environmental and societal services that farmers deliver to society should be valued to ensure a fair income for them and for the sector to become more sustainable. The thesis proposes a three-horizon strategy on how to create value for the ecosystem services that farms can deliver to society. By implementing a system that monitors ecosystem services like biodiversity, soil quality, and carbon sequestration, these values can be quantified. In the first horizon, a product-service system is designed to make farms more accessible for citizens. With an application, citizens can visit farms and learn about sustainable agriculture. The second horizon embeds this application in a platform that enables farmers and citizens to monitor the ecosystem services on farms. Through citizen science projects, visitors help farmers to collect data about these services. This facilitates research about the impact of sustainable farming on the environment so that the vision of the third horizon can be realized. This vision shows a societal system in which farmers and citizens collaboratively work towards a sustainable agri-food sector where ecosystem services are valued and appreciated. The strategic roadmap is supported by visualisations of the application and platform. Furthermore, an implementation roadmap was created to support the organisation in the implementation of the strategic advice and design products. This project provides a different view on the role of agriculture in the Netherlands by looking beyond the need for fair food prices. It provides a vision where the appreciation for the work of farmers is divided into multiple services instead of embedded in the price of a carton of milk.
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Master thesis (2019) - Charlotte van Diest, Ruth Mugge, Lise Magnier, Michael Luchs
The aim of this thesis is to explore how designers can create well-being for all through product or service design. Well-being for all can be achieved through designing with the focus on Consumer Wisdom. Consumer Wisdom is defined as the pursuit of well-being for oneself and for others through mindful management of consumption-related choices and behaviours. The theory gives insights on providing consumers with products or services that enrich life with well-being for all (Luchs & Mick, 2018). The Consumer Wisdom theory was researched from a consumer perspective by Luchs and Mick (2018) and through a literature study the theory was transformed into a design strategy. Various design theories relate to wisdom, although they do not call it wisdom nor mention it. From these theories existing design directions were added to the 6 dimensions of the Consumer Wisdom theory to provide designers with the information to use the theory into practice. To cluster all the theories addressing wisdom into one tool is unique. Study 2 generated proposed design categories for the established design direction to gain insights on how to design for Consumer Wisdom. These 48 design categories were found through a categorisation task done by my supervision team and me with the use of 135 product and service examples. Merging all the information of study 1, 2 and research on existing design tools, developed three design tool concepts. The ideation was done through the use of a brainstorm session on the format of the tool and by using the ‘HOW-TO’ method. The best concept was chosen with the use of the Plus-Minus-Interesting matrix and the C-Box methods.Before evaluating the tool an iterated on the concept was done. A brainstorm session helped to evaluate the design tools visibility and feasibility. The evaluation showed that the provided examples were necessary to understand the theory. The design categories directed the focus on and helped to design easier for a certain design direction. The final tool is the Consumer Wisdom design tool consisting of a card set to design with. The set consists of: an informative card, dimensions cards, design category cards, design purpose cards and an instruction manual. The tool helps designers use and understand Consumer Wisdom in their design process. In the future the final tool should be tested with design students and design professional to validate its usability, feasibility and visibility. ...
Master thesis (2019) - Sanne Jongeling, Sylvia Mooij, Lise Magnier
To successfully introduce a new product to the market it is key to respond to consumer needs and values. In the dynamic marketplace of today, it is thus increasingly important to target the right market segment and to understand consumers in order to offer the right value at the right time. ENGIE, a services and energy company, currently develops a new energy product named Dante. The technical functioning of the product is proven, yet the market entry of the product still seems far away. The actual application and target group of the product are not yet clarified. Therefore, the main objective of this project was to develop an introduction plan to support ENGIE in the commercialization process of Dante. An extensive qualitative research was conducted to generate insights on how Dante could be valuable to possible consumers. The insights gained throughout the project were integrated into an introduction plan. The introduction plan identifies the market segment for the product launch as well as the market segments for expansion. A deep understanding about the first target group was created and communicated in the form of consumer profiles. The commercialization and product development of Dante and how these should respond to future regulations, market trends and technology breakthroughs are presented in roadmaps. ...