We’re not sure why you’ll ever need a flashlight that’s about the size of a matchstick, but they apparently exist. The Matchbook packs 8 tiny lights, with a single LED at the tip. The base is magnetic, so it can easily attach to a metallic surface (provided it’s ferrous), and will last up to 8 hours. The entire set of 8 will then provide you up to 64 hours of illumination… but that’s it. They’re apparently not rechargeable, but since they’re meant to be used in emergencies, we’re sort of ok with that. They’re small enough to be tossed in a purse, a wallet, or any other small space. At $32 for a set of 8 (plus one spare one for good measure), it’s not a terrible expense.