Simple but genius idea - could come in really handy during some random situations: I'm always afraid to rely on wake up calls at the hotel, and I have a nasty h

Simple but genius idea - could come in really handy during some random situations: I'm always afraid to rely on wake up calls at the hotel, and I have a nasty habit of forgetting my phone charger while traveling. Besides, anything that makes me feel more super-heroesque is pretty clutch.