Looking for an inexpensive gift for the green kid in your life, old or young?! This solar powered hat fan is a fun way of keeping cool in hot weather and will appeal to the gizmo wizard as well as any ten year-old. Simply clip the fan onto the brim of your hat and the sun will power the mini fan and blow air in your face to cool you down. A great way of encouraging kids to wear their hats on hot days! Maybe not so great for girls with long hair though, I can imagine some disastrous results on a windy day!
Costs $10 from Real Goods