Looking for a material!

[RLDuffey]

Hi,

I am a student looking for a material for a project at school. I am currently studying mechanical engineering so the chemistry and materials aspect is a bit over my head.

We're working on a concept to develop a more ergonomic chair and would like to find a material that would be comfortable to sit on.

My vision would be a bunch of gel-like spheres that could be electrically stimulated and move around due to a current passed over them. Also maybe create heat as a by product. Basically a comfortable thing to sit on that would be able to vibrate a bit.

I've been trying to find stuff online but my limited knowledge of gears and beams isn't helping too much.

Any help would be greatly appreciated.