We had a few of these when I used to work in a bowling alley in my student days. Sending people to the lane mechanics for 10 yards of fallopian tubing, that sort of thing. Or mopping the floor of the walk-in freezer. I didn’t really prescribe to it very much, I thought it was a bit cruel.
One popular one was to have someone help “align the cameras” at the ends of the lanes (that’s how the system knows what pins have dropped. They’d have someone stood there with a floor mop in each hand, arms outstretched. Then put out a PA announcement, “could someone please remove the scarecrow from lane 12.”
The only one I did personally was servicing (well, cleaning) the coffee machine. It was a little desktop unit that vended coffee or hot water in cupfuls every time you hit the button. I’d removed the coffee hoppers, and had one of the juniors empty the water canister by repeatedly vending 1/3 of a pint and tipping it into a bucket. “Wow, it holds a lot,” she said. “Yeah, it compresses it, it’s quite clever.” Of course, it was plumbed in to the mains water supply.