Screwpop ($4.95) should be on your keychain right now!!!
The solid metal lightweight (1oz) multi-tool easily fits on any size keyring and is great for all types of random do-it-yourself projects. It conveniently offers the following tools right from the palm of your hand: Phillips Screwdriver #2, Flathead Screwdriver #2, 1/4″ Hex Nut Driver and Bottle Pop-Top Opener.
The Screwpop is unobtrusive, easy to carry and incorporates the benefits of a full size tool but with the advantage of it actually fitting in your pocket.
Screwpop can be ordered HERE.