Do you like to be prepared? Then you'll love this standard issue dog tag tool from Prometheus Design Werx. The titanium accessory is the exact same size as a standard American military issue dog tag, but it can do much, much more.
How much more, you ask? Well, there's a 1/4-inch bit driver carved into one side and a low profile bottle opener in the other. One of the edges also functions as a screwdriver head, while the area carved out of the center will work as a closed end wrench for both metric and standard hardware.
At $60, it's a bit pricey for a multi-tool. But consider that you're also getting a pretty rad accessory to wear out on the town. The dog tag tool is also made in the San Francisco Bay Area, so you're supporting good old fashioned American workmanship. Who could argue with that? [PDW]