In this case, the task was to design 4 three-dimensional cardboard toys. Each of them had to be simple enough that a child could assembly and colour it by itself. In addition, all parts of each model had to fit to A4 size for economic reasons. Depending on the design, there are from 9 to 13. In order to make them easy, they are numbered on the back, which helps children to use the enclosed assembly instructions. Durability and stability of the models assure that children play a long time, and allow to colour the models even after prior assembly.
The models are distributed separately, and as an integral part of the colouring books with stickers.