Sneak this $10 Keychain Tool Onto a Flight for Mid-Air Screwdrivering - http://gizmodo.com/5613916...
"Let's face it—you're probably up to no good with this keychain tool, which conveniently disguises itself as a key. At about a third of the price of a Swiss Army knife, it has eight handy tools. That's three different screwdrivers, a pair of tweezers, a wire-stripper, bottle-cap opener, nail file and nail cleaner. It comes with a fake key which the tool hides behind, and a stainless steel key-ring." - Victor Ryden 美久太阿