Every day is Earth Day, hard-core environmentalists will tell you, but on the calendar it's April 22. And if you want to show some support for Mother Earth, you might as well do so without abandoning your techie principles. There's no shortage of energy-efficient, ecofriendly, or generally "green" gadgets available, but here are 15 of the coolest, weirdest, and most practical, in no particular order.
HYmini Wind Charger
The HYmini stores energy to its internal battery, which can charge MP3 players, digital cameras, and other 5V devices. Particularly cool are the optional arm band and bicycle holder; you may look a little silly wearing one of these chargers, but think of all the juice you'll generate.
If you're the kind of couch potato who would rather stick with one channel than get up to change the remote's dead batteries, you'll appreciate the £9 PowerPlus Leopard. Its small solar charger can even absorb ambient light, so you needn't place it in direct sunlight to juice up.
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