Well, first off, it's called a lamp...
Three. One to screw it in and two more to hold down the editor.
Lightbulb.
Two at most.
They grab the stack of un-signed adoption papers, stand on top of them, then proceed to change the light bulb.
By seducing it
You get light music.
Just one, but doing it will make them think they're going to be an electrician in the future.
One.
