We have covered plenty of cool smartphone chargers in the past. The Pocket Sun happens to be a versatile smartphone charger that generates power from sunlight, heat, and your movement. It is compatible with smartwatches and tablets as well. The Pocket Sun has a USB port but can charge your device wirelessly.
The Pocket Sun has a solar panel, an electrical transducer, and a thermoelectric generator to produce energy for your smart devices. You can find the project on Kickstarter.