This one's my submission for this week's 52Frames "Levitate" challenge. In some ways, it's a re-do of a photo I shot back in 2011, although I've changed a few things, including allowing the light from the bulb to illuminate the background directly rather than hitting it with an external flash, and this time, I eliminated most of the external reflections on the glass envelope.
It's interesting to see that the LED has now become the standard light emitter rather than the incandescent lamp I used back then - I'm not sure LED bulbs were even available at that point, or if they were, they were very expensive.
I soldered a stiff copper wire to the base of the bulb, and a thin wire to the centre contact. These wires hold the lamp up, and pass neatly through a hole in the background, hidden by the base of the bulb, where they are connected to a power source.
Needless to say, this isn't the safest use of electricity, so I don't recommend repeating this unless you know what you're doing, and are comfortable working around live electrical equipment!