6-in-1 Educational Solar Kit. Build your own solar kit and have fun under the Sunlight! Mini solar building kit teaches children the benefits of solar energy while they create a toy that is both fun to play and requires absolutely no batteries. This is an excellent beginner building kit designed to teach how solar power is used to drive a small motor. Children use the 22 parts (no tools required) to build six different working models such as an airboat, windmill, puppy, car, and aeroplanes. For best results use outside in direct sunlight!