Magnetic Light Fixtures

Taking inspiration from watch chargers, I wondered: Why do we put holes in our ceilings for lights? Imagine you have a magnetic pad sitting ontop of your plasterboard, and then on the in your room, just on the other side of the plasterboard, you have a magnetic light fixture that is powered by the pad. Moving lights is moving the pad inside the ceiling and clacking the light up. It means you can move lights and not leave holes in your ceiling—ultimate configurability.