Most of you probably know how annoying it is to work on something like an engine or a computer with a flashlight in one hand and a tool in the other. This bracelet helps free up both hands using four built-in LEDs—and it comes in packs of two so you can wear one on each wrist while you work. It's a great idea, but I suppose your friends and fellow mechanics will be unable to risk a joke or two at your expense. Something like: "did you forget your purse today?" and "where's the rave party boy?" Available for $20. [Computer Gear via BookofJoe via Coolest Gadgets]
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It's a trap. You put this on, and when you reach a certain age, it starts flashing, and you get taken away.