The Gerber Shard is a TSA safe multitool that I've been grateful to have on a number of occasions while traveling. It's only 3 inches long and weighs 1/3 of an ounce, so you won't notice it until you need it. It has a small and medium flat driver, Philips head driver, wire stripper, pry bar, bottle opener, and lanyard hole. (And that's not all!)
This tiny supercheap Gerber multitool comes with me on trips
