Check out this fun tutorial which shows how to make all kinds of jewelry from your LEGO pieces! The colorful blocks make fun costume jewelry for everyday wear or novelty pieces for cosplay or Halloween outfits. Read the DIY tutorial here: DIY Lego Jewelry
Here's a photo of some LEGO jewelry on sale at a LEGO club.
LEGO Jewelry for sale at BayLUG 2012 by Bill Ward [CC BY 2.0]