At least two, but they have to be pretty small to fit.
Just two, but more can join in if there's room in the lightbulb.
Just two, but you need a really big lightbulb.
The bear minimum
Three, one to hold the giraffe, and one to put the clocks in the bath tub.
You can only fit 3 fingers in a bowling ball
What I hear: How much of this sandwich can you fit in your mouth
One to screw in the lightbulb, stock four carts of supplies, and handle seventeen simultaneous customers at any one time for five consecutive hours.
Well, turns out one is not enough, but if you pair it, two can.
On his flying saucer.
A Mars Bar
