Google had the radishes, Facebook had the gizmos, and this is just one of those. This is in addition to countless other things used over the years at both places. (Sheets of paper in clear holders, Android tablets rigged to do PoE, you name it.)

The radishes were neat since they managed to do what they did from whatever power they could scrape from their solar cells. This is impressive when you consider they were indoors! They also had some 802.15 type thing going on, albeit with funky little boxes scattered throughout doing gateway work. I was disappointed when that project was discontinued before it got very far.