Looking for more than just a flashlight in your credit card sized gadgets? How about an entire toolkit.
The Credit Card Companion from Tool Logic features a 2″ serrated blade, combination can/bottle opener, awl, tweezers, toothpick, in/cm ruler, 8x power lens and a compass. At 1.3 oz, you’ll probably forget you even have it on you.
And if you’re looking for something a little less handyman and a bit more survivalist, they also offer the Survival Card, packing a magnesium fire starter and signal whistle.