Sometimes, the smartest design is the one that simply gets the damn job done. Take the Tylt Y-Charge. It's a 2.1-amp dual-USB gadget charger that plugs into your car's outlet so you can rejuvenate two devices at once. The 73mm-long silicone-clad charger weighs less than one ounce and easily slips into a pocket once you've arrived at your destination. [$30;]