biomechanical builder set

I have recently saw a specical on TV discuss a portable generator they want to install in a solider's boot to generate power while walking. It uses a fantastic electroactive polymer that act just like human muscle that when voltage is applied to it, it stretches. The process is reversible that when you stretched it, it generate voltage.

I think it is a waste to put such wonder in a boot of solider. A better usage of it would be use them to teach our kids biology and how the animal works their muscle, and truly appreciate what complex machine nature have built. Better yet we should let them use their imagination to create new machine that fully utilized such material.