Mathmos‘ eight-inch tall windlights are pretty simple—just a generator, 2.4-inch propeller and two LED lights—but that doesn’t stop them from having their own cute, glowing eco-charm. Basically when the wind blows strongly enough, they light up: dot them about your garden and you’d have a great display, but only if the wind is blowing. If you’re in London, Jason Bruges Studio has arranged hundreds of them into a 45-foot high Aeolian Tower scultpure at the Southbank which is showing until November 16th. But if you want just one, it’ll cost you around $US18. [Technabob]