AMPY is a wearable device that captures energy from your motion, turning it into power to charge your phone or any USB-powered device.
Essentially, if you are riding your bike, running, or just walking around you would be charging your AMPY device. It captures your kinetic energy when you move and stores it in an internal lithium ion battery.
The device also comes with a smartphone app. The app tracks: the amount of energy you've generated, the number of calories you've burned and the carbon footprint offset from charging with AMPY.
AMPY has a Kickstarter page that has been funded but you can still support if you want. If you feel like waiting then they should be available mid-summer of next year.