Great idea! I don't know how I feel about the whole thing though. I wouldn't keep my devices inside the box while charging because of the heat. But I think I might want something to conceal them. Not sure about this, but it's still a good idea.
These covers are mostly used for Television wires, but they are also suitable for sockets, CPU and other electronic cables. Wires are always a real pain. Getting tripped on cables may even damage the wire itself, so the covers and not only good for you, but for the wires themselves.