OK, so you’re never killed a man, but you wouldn’t mind people who approach your refrigerator thinking otherwise. Enter the Ninja Shuriken Magnet. For $18 you get two magnets, which, sure, stick to metal, but they also serve as stark reminders to anyone who dares think about dipping into your stash of bacon-wrapped bacon that the last guy who tried that move left with one less digit. As you know, shuriken means “sword in hand,” and while we suggest you use these magnets to intimidate fridge intruders, we suppose you could also use them to hold up takeout menus or reminders about picking up your dry cleaning—just like real ninjas do.