My diploma project was to design different objects which can give interesting and various feelings, stimuli for children. I aimed to give a solution for the flat feet problem - 60% of children have flat feet worldwide. 
About its function: move-, respectively sole musculature improving game simulating natural surface qualities by applying synthetic substances
About its usage: its fitting parts from an appropriate surface/ground for playing, on which children walk barefoot solving different exercises - for example to grip a foam ball with toes
Materials: memory foam, vulkolan, rubber, silicon, polymer foams