Wallet Ninja 18-in-1 Multi-Tool
This very popular credit card sized multi-tool has 18 functions, like bottle opener, 4 screwdrivers (Phillips, flat and eye glass screwdrivers), can opener, nail puller, peeler, 6 standard US hex wrenches (4, 8, 12, 10, 6 and 2), cell phone stand, box opener, letter opener and ruler (in and cm). Since it doesn’t have a blade it is TSA approved. Made from 4x heat treated steel. Available in original classic black and multiple other designs at Amazon.