August 26, 2013
This clever gadget, called Activ, makes it possible to harness the kinetic energy created by your own
body! The personal electricity generator was designed to be worn on the knee- with each step, it juices
up the battery a little more. After it’s full, just attach a USB cord directly to Activ to power your cell
phone or other device. Instead of plugging into the wall… plug into you!