Sometimes fake mediums used red lamp bulbs to produce a "lighted" scene.

I found a used lamp bulb in his desk.

A portentous spectacle, accompanied by terrifying noises and popping lamp bulbs.

In darkness, it didn't look like the floating lamp bulb at all.

Hercule Poirot blinked a little, realizing that the lamp bulb was at least 150 watts.

Terry unscrewed the lamp bulb and gave the lamp a tip.

Moth round the lamp bulb, bumping into it, a powdering of gold dust coming down.

Bond lay and stared up at the little message on the lamp bulb.

Just before the lamp bulb gave out completely, he saw Mamoulian shake his head.