https://www.youtube.com/watch?v=vST64NQSqxA
SnapPower Charger adds a USB port to the bottom of your wall power outlet without a need for rewiring. The faceplate screws onto the wall in place of the old one, and conveniently adds a single USB port. You can pre-order the SnapPower Charger for $14 for a single, or $110 for a pack of 10.