Keeping your phone charged everywhere you go is going to be much easier when you have a decent solar charger. Pocket Sun is not your average charger though. It is a energy harvesting devices that uses your movement or sunlight to generate power for your smartphone.
Pocket Sun lets you go off-grid and produce clean energy for your gadgets in multiple ways. It even has an thermoelectric charger. It is compatible with smartwatches as well. More information is available on Kickstarter.