If you've got a couple hundred friends whose old eyeglasses are too busted or too heinous to donate to New Eyes for the Needy, Curbly proposes you make this:

Or maybe one made from plastic water bottle bottoms is more your style:

Empty Platic contaianers of all sorts can be turned into interesting, artsy lighting. Yanko Design shows us how used inkjet cartridges and christmas-light-like strings of LEDs create an interesting, eerie effect:

And designer Julian Winn thinks old plastic detergent bottles can look pretty cool: