This came up in class tonight, so, a repeat:
Okay, here’s a simple trick shot for you.
How did I get the bulb to light up without it being connected?
Simple. Like this:
I used an LED flashlight behind the (frosted) bulb. That makes it look like the bulb itself is lit. 6 second exposure, 200 ISO, f/5.6.
Sometimes “simple” is all it takes.