A Ferris wheel.
Two. One to hold the bulb, and one to drink until the room starts spinning.
Two. One to hold the light bulb and one to drink until the room spins.
the pirate replied, "Arrg it's driving me nuts!"
One costs a lot of money to maintain, keep running, and give you the results you want. The other has four wheels.
A jet propelled elephant !
The stairs.
A Ferris Wheel.