I can go on and on about the wonders of solar energy, but I think this Solar Windmill kit does the job pretty well with a simple spin of its blades. It is not only a joy to build (rainy day activity, anyone?), but its clean off-white exterior makes it a pretty piece to keep on the windowsill while it goes… all without batteries! Great as a eco-friendly gift for curious minds!
Suitable for ages 3 and up.