Ok, so it won't power your massive desktop, but researchers at the University of Tokyo have developed a one-millimeter-thick sheet of plastic that can deliver 40 watts of power to gadgets on it or near it. The plastic uses pentacene, an organic molecule whose electrical conductivity can be controlled.
The table in the pic is made of the plastic and is shown here powering a light in the fish bowl. Definitely not the best example, but you get the idea. The sheets are expected to hit the market in five years, but if you can't wait that long and need to abolish those wires in your apartment, you might wanna look into fitting your components with these Flatwires in the meantime.