Two at most.
The herpsichord.
Thank you, Karma gain
One. They simply hold the bulb and wait for the world to revolve around them.
Two - One to put it most of the way in, and one to give it an interesting twist at the end.
Change!
One but you should have seen the bulb it must have been THIS big.
Uranium gets to its half-life on time.
A Global Offensive.