The thesis is concerned with the development of the building kit (the building experience) for a bamboo balance bike. It starts with research on the company and target group. The research is based on several sources: literature, observations, interviews, generative research (workbook) and a questionnaire. The company of the KaboogaBike is a start-up that aims to make socially responsible and sustainable products. The company aims to involve the users in the building process and stimulate the parent-child bonding by offering a building kit for the bike. The target group for the building kit consists open minded, experience driven adults, and their toddlers (age 1½-2 year). The research showed that the child is in the middle of an internal struggle “the creation of the own identity”. Parents have a strong influence on the child, the child’s development and character. The parents feel socially responsible and are interested in sustainable products. In their daily interactions with the child they take a caring, teaching, observing and supporting role. Participants in the questionnaire showed an interest in the building kit because they expect that building the bike will be a fun activity. Parents who are not interested see their limited technological skills and the young age of the child as a problem. The research also made clear that the product should shift the parents’ mindset from a goal-oriented mindset towards a more exploring and playful mindset, in order to design a building kit that provides a positive experience for both parents as child. The parents also have to allow the child to engage more into the process instead of only asking the child to give the components. Finally, the parents need to release some control. This thesis describes the design process of the building experience in five iterations. The first idea of the product comes from an advent calendar: to obtain the bike components gradually. Later on it is decided to divide the product in five steps. The steps are called “adventures”. In every adventure, about 2 to 3 small activities are suggested to explore and play with the components. The activities are small, and focus on exploration by the senses (they are adapted to the child’s interest and capabilities). A story about ”Wanda de panda” and her parents is used to guide the user. This story is integrated in the packaging. Parent and child can build a part of the bike after every adventure. It was decided that the product could look standard from the outside, but it should have interesting interactions (surprising elements) and look less standard from the inside. Moreover, every user should obtain the components in the right order, even if they do not read the instructions. This resulted into a product that only shows the door to the next components after the previous door is opened. The hidden parts trigger curiosity and together with the green lines, holes, the story and images of Wanda de panda, users are activated to open the next door and to do the activities. The product is made from recycled corrugated cardboard. It has an optimal size for transport and the sustainability and sustainable image of the product are hereby taken into account. The packaging consists of 7 parts: the outer box, the outer frame of layer 1, door 1, door 2, a sheet between layer 1 and 2, the outer frame of layer 2, and door 3. The outer box and sheet between layer 1 and 2 can be re-used by shaping it into a bike stand. A prototype of the product is developed and tested with actual users. This user test made clear the product fits the design goals: the parents are activated to explore and play and to take the time for it. Moreover, they also engage the child into the process. Compared to a regular building setting, the parents release control, but they are more goal-oriented as with regular play. The product also fits the qualities of the interaction vision: everybody enjoyed using the product, believed the product was easy to use, worked together, and was positively surprised. The parents appreciate the guidance and they think it offers them enough freedom and/or inspiration to explore by themselves. Finally, the thesis provides recommendations for the production and suggestions to improve and develop the product further.