Never understood why houses and offices are not built with arrays of inductive coils laid out in a cellular mesh and embedded directly in to the walls. We could just have a normal electrical power socket with a suction cup on the back that you stick on the wall that draws power directly from the inductive mesh.
Instant power socket where ever you need it.
You could embed the mesh directly into the dry wall and let it electrically isolate itself whenever it is cut. The mesh layout would also be robust enough to route power around areas that have been cut.
If you made each portable, remote power socket addressable, i.e. with an IP address and a small microcontroller built in to it, you could directly control the power socket from a central system. Switch lights on and off, monitor power draw, and so on.