No matter how many times you watch The Matrix, the creepiest part is seeing the whole of humanity hooked up to pods to act as living power generators for their robot masters. Now Germany-based designer Dennis Siegel has created a kind of mini version of this idea that he calls an Electromagnetic Harvester.
The tiny device allows him to draw redundant energy from household appliances, mobile devices, and even outside aerial electrical lines. An LED light indicates when power is effectively being drawn in, and that power is conveniently stored in what appears to be a common AA battery. According to Siegel, it takes the Electromagnetic Harvester about one day to fully charge one of the batteries, depending on the strength of the electromagnetic field being sourced.
You can see video of the Electromagnetic Harvester in action in the video below.