Children of the nitinol

Well, later they might make music.
For now though I'm picturing a battery operated modular building kit much like Capsella but with nitinol strips of varying lengths and composition, and switches activated by each strips deformation instead of moving parts. Several remote control bimetallic servos complete the package.

All sorts of spider-like and insectoid creations could be brought to realistic life in this fashion, slithering, milipedantic, and now, with the new heat seal Mylar sheet with refillable helium canister expansion pack, even ornithopterrific avian and aquatic life forms could be cruising gracefully around the house.