This paper presents the Collaborative Design Thinking (CoDeT) co-design approach, its theoretical framework, and its application in a case study with 49 children aged 9 to 10 in two schools. CoDeT aims to scaffold children's collaboration and design thinking in co-design settings characterised by a high child-to-adult ratio (ca. 1 adult for 15 to 20 children), such as schools, museums and maker spaces. In these settings, children have to work relatively independent from adults who become guides on the side. This can be challenging due to children's limited understanding of the design process and their lack of skills to collaborate productively towards a shared design goal. CoDeT addresses these challenges by integrating principles of Social Interdependence Theory (SIT) and Design Thinking (DT), which together form the theoretical backbone of the approach. CoDeT was first applied in a case study and yielded promising results in terms of children's collaboration and design thinking skills, yet possible improvements were found. The insights of this case study informed the revised version of CoDeT presented at the end of this article, in a what-why-how structure, allowing researchers and practitioners to apply the co-design approach in a wide variety of contexts characterised by high child-to-adult ratios.

Children's play objects are increasingly shaped by technological innovations that can transform them into hybrid, internet-connected toys, a phenomenon referred to as the Internet of Toys. Previous research has presented user research on connected toys, but little is known how to approach them from a design perspective. This paper investigates whether and how an animistic design perspective can foster a fruitful exploration of the design potentialities of connected toys. It addresses this question by analysing three design concepts of connected toys that were developed in the course of an R&D project. These included a high-tech bracelet with digital passport, a card game with a customizable 3D-printed figurine, and a robot as a board game play mate. The results show how the design qualities of connected toys can be categorized on a spectrum ranging from a certainty-driven, problem-solving logic to an uncertainty-driven, animistic design perspective. The contribution of this study is a better understanding of how connected toys emerge in a broader ecology of children, toys, and data that all act upon each other. By embracing the uncertainty in this complex and fluid network of subjects and objects, the animistic design perspective allows to explore a broad set of design opportunities relevant in the realm of the Internet of Toys.