As I don't have the technical know how, but am very curious to see if it would work out, might I propose a project for someone to try out? Or at the very least, get some confirmation that it might be possible. I have 2 Pis running Volumio, one for streaming my personal library and the other as a satellite. My question is, is it possible to power a Pi through wireless transmission? As a bit of background, I've been watching restoration videos and came across a globe shaped radio (MyMateVince). That reminded me of the hovering speakers. As a bit of a glorified case, is it possible to recreate that using a Pi? I have a few ideas for it, but my concerns are weight and if there would be any possible streaming interference caused by the flotation system.