Although most modern phones can go quite a few hours sans an AC outlet, we understand the need for juice in unexpected emergencies, and while the solar-powered charger does a fair job at high noon, you'll probably need a different approach come nightfall. Tackling two issues in one fell swoop is the cellphone-charging flashlight mod, which not only provides a beacon of light for those dim excursions, but also offers up hand crank recharging abilities for your fading mobile. Of course, hacking your flashlight to pull double duty as a manually powered charger is a bit more complex than just picking up a hamster or bicycle-powered option, but you've got to admit, crafting a makeshift charger with spliced cables and a soldering iron is totally MacGyver-approved. So if you're interested in giving yourself (and your handset) a bit longer life when robotic overlords eventually invade our domiciles, be sure to hit the read link for a video demonstration, and do mind the managerial cat on duty.

[Thanks, Kipkay]