Wallet Ninja Pocket Multi-Tool
A pocket multi-tool for the Ninja among us. Ninja use many weapons and this is perhaps one of the most versatile; it features a letter opener, box opener, cell phone stand, a number of hex wrench sizes, screwdriver, bottle opener, can opener, peeler, ruler (in inches) and more!
It has 16 useful functions in all, on one credit-card sized multi-tool that easily fits in your wallet or purse.
It's also 100% approved by the TSA for airplane travel, although in practice, you never know what you're gonna get with the TSA, so don't have absolute faith in that. Some people have had this tool confiscated by the "security" of TSA. Good thing you're a Ninja and can sneak around security checkpoints invisible and undetected.