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

One way of eliminating wasted energy is by switching off all those home machines that have stand-by features, which consume energy even when they are not being used: the tv, dvd, stereo and so on all gobble up energy in stand-by mode. This surge protector makes it that much easier to manage, so that you can switch off all the devices plugged into it with a simple remote control, without having to dive under desks or behind furniture. It has six switchable sockets and two always-on power outlets for easy management. The remote control can be wall-mounted near your light switch, so that you can just switch everything off in one go as you leave the room, saving energy costs and phantom power consumption. This is one very simple way of reducing your carbon footprint and saving money, as well as protecting your electronics and extending their life.

Currently costs $31.62 from amazon.com