There will be times when your smartphone is low on battery and you won't be near an outlet, but that doesn't mean you're in for a dead device. A portable accessory like the Verizon Motorola Droid Solar Charger will let you charge your phone from anywhere, and even better, you can use sunlight to charge the battery. Once the cell is juiced up, you can connect it to the Motorola Droid via a Micro-USB cable to transfer power. The accessory costs $29.95.