Bruce Schneier is auctioning off his DefCon speaker's badge over at eBay. Looks really neat (programmable LEDs, battery-powered!) and proceeds benefit the Electronic Privacy Information Center, so Americans especially, if you're interested, go for it!

Slight downside is the price is already over $300. Yours truly was involved in the bidding earlier today and gave up after raising the price several times; apparently some die-hard fans (or privacy-conscious person) has set a rather high autobid limit!