Be prepared for almost any situation with The Pocket Survival Tool from Trixie and Milo. This single, all metal tool serves multiple functions, but is sized right to fit in your wallet like a credit card. The Survival Tools is only 3 3/8" x 2 1/8" but contains all the following tools:
Flathead screwdrivers, both small and large.
Hang Rope Hole
Outside Hex Wrench
Large and Small Knives