“This folding blade fits on my key chain, but it handles whittling and basic camp jobs better than most mini knives,” says one tester. “By modifying my dicing technique—holding the knife vertically to move through bigger pieces—I diced a medium onion without much trouble.” The serrated, hollow-ground, two-inch blade is sharp and folds into a textured, bright yellow plastic handle (easy to spot if you drop it or have to fish it out of a dark stuffsack). And the H-1 steel blade, made with nitrogen instead of carbon, won’t rust, ever. $50; .6 oz.; spyderco.com.