1) It is a kind of solar educational kit, the students must be very interested in it
2) In the car, to be an adornment
3) In the room, it is a vogue furnishings, put it under the yellow spotlight, turning on the   light, it turn automatically
4) A kind of new solar gift or sales promotion product for the festival
When this helicopter sees the sun or strong yellow light, the rotor turn. You will not believe how fast the airscrew can circumgyrate
5) It is a great project for the first-time builder. It demonstrates how the sun can provide   power to a DC motor, no batteries required