by 
The Exuvius Titanium Multi-Tool Collar Stays ($30) is the invention James Bond always wanted. These lightweight, titanium Exuvius Titanium Multi-Tool Collar Stays keep your shirt looking crisp, but pull them out and you have a bottle opener, screwdriver (phillips and slotted), and thread cutter. Get this: the titanium passes the TSA inspection at the airport, so you cruise through undisturbed. [source]