Screwpop
Add some multi-function utility to your keychain with the Screwpop ($5). This diminutive, handy portable tool offers a bottle opener, #2 flathead and Phillips screwdrivers, and a 1/4" hex nut driver, all in a package no bigger than a standard key. Great for impromptu six-packs, handyman jobs, or grabbing cabinet hinges off the side of the street. [Thanks, Andrew]