Eye On The Sparrow Designs takes musician's used guitar strings, turns them into jewelry, and sells them for charity. A percentage of the sales goes to the Carter Albrecht Music Foundation. I recently donated some of mine. You can find them at the link below. And really the only thing better than my old sweaty guitar strings is helping out a great charity.
http://www.etsy.com/view_listing.php?listing_id=33628793Thanks,
-Jeremy