Ever dreamed of building a solar oven, an air conditioner, a refrigerator, a wind generator or a lemon battery?
This brilliant little house can teach you (and maybe your 12+ year old kid/cousin/nephew) the basics of alternative energy and sustainable living. Plenty of little experiments to heat the house with the sun's energy, using evaporation for cooling, cook with the sun, using wind energy, etc. Great gift.
Sold at uncommon goods for $90