May 8, 2014 10:25 AM
Go ahead and deride it for being old-fashioned, but you're going to think the Etón BoostTurbine2000 ($60) is genius once you find yourself in the middle of nowhere with a dead cell phone. Use the hand crank to generate energy in this back-up battery pack in order to bring your phone back to life. There's something quaint about having to do manual labor before texting your boyfriend. It's the modern day equivalent of churning butter!
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