Pack your solar panels in the briefcase

(Credit: OhGizmo)

Let's say you're a road warrior who's always running out of batteries but doesn't have the biceps to keep your gadgets juiced and ready at all times. Here's a way to take care of those needs with a power supply that looks just like a briefcase so no one will be the wiser.

Inside the "Solar Briefcase" are two solar panels that produce 13 watts of power, OhGizmo says. That's enough to recharge a mobile phone in an hour or so, when the sun's at its peak. If you're a true gadget freak, you may want to consider a 20-phone charger or the 600-watt "PowerCube" if you've got a flatbed truck.