You could do worse than get one of these. German army issue, made by Victorinox but much cheaper than the Swiss army equivalent. Still some US service personnel get posted over there, otherwise what you save on purchase price you'd lose in postage. Knife blade keeps its edge well, can be opened one-handed, makes a good reamer as well as a plug/flake cutter. Saw blade is awesome, also has two screwdrivers, can opener, awl, and a bottle opener which is also handy for prising open new vacuum-packed tins of tobacco. Also has a split ring on the butt end of the handle you can attach a lanyard to.