6 in 1 educational solar do it yourself kit:

Mini solar building kits teach children the benefits of solar energy white, they create a toy that is both fun to play with and requires no batteries.  Newest member of this popular line is the 6 in 1 Education solar kit, an excellent beginner building kit designed to teach how solar power is used to drive a small motor. Children use the 21 snap together parts (no tools required) to build six different working models including an airboat, windmill, puppy, car, and two different planes.