Hi,
what about making kids games with color sound and touch button that can be reconfigured be the parents give the toy longer life.
have a center unit with 8 connects in a star pattern where different parts can be added.
make it easy for parents i add new sounds/voices to commands and results
make it possible to images on the buttons help children learn different things instead of just having the same 8 images.
there are many buy and play toy for kids, but they have fixed function and a fixed life span. this could give the toy longer life and make it more challenging for the kids and parents.
yours Jesper