Check out the Screwdriver - MINI +|- on Kickstarter. This is a screwdriver with a changeable head that's small enough to put on a keychain. Plus, it has a bottle opener, so giddy up. The version shown below was printed from a 3D printer and is a prototype. The final product will be made of a zinc alloy with a chrome finish on the body. I love clever gadgets, and as someone who has wished he had a screwdriver on him countless times, I think this is cool. Funding options are simple: $15 gets your two of these devices when they ship. They're only looking to raise $5,000, too. Check it out.
Check It Out: Tiny Screwdriver and Bottle Opener on Kickstarter