Wireless! For Dan & his wires.

* snip:
light bulb is a levitating yet powered lightbulb. It will float stably in midair and remain on for years without any physical contact, charging, or batteries. Ironically, with the levitation and wireless power circuitry both on, this entire package still consumes less than half the power of an incandescent bulb.

This is not a trick or a photoshop manipulation. The bulb and the casing contain hidden circuitry that uses electromagnetic feedback to levitate the bulb roughly 2.5″ from the nearest object, and uses coupled resonant wireless power transfer to beam power from the housing into the bulb itself

And I can personally attest. I saw this light bulb a couple years back at an MIT show in Boston.