The Style PS Multi-Tool from Leatherman contains 8 tools in one, weighs just 1.58 oz (44.7 g) and folds down to 2.9" (7.5 cm). In this mini-marvel are a nail file, a flat and a Phillips-head screwdriver, spring-action pliers, spring-action wire cutters, scissors, tweezers, a carabiner/bottle opener, and spring-action needlenose pliers. It's got a durable stainless steel body, a glass-filled nylon handle scale, and a key ring attachment. The tools are outside accessible and it comes with a 25-year warranty. Best of all, it complies with TSA regulations (as of March 2009), making it the go-to tool to carry with you when you're traveling light.