Here’s another one which again I can’t verify if it’s true.
The congregations’ wine barrel was running dry so the shammes asked each person to bring a jug of wine from at home and pour it into the barrel. One person was cheap and decided to bring a jug full of water to pour in. (Who could taste one jug of water mixed into a whole barrel?)
Unfortunately everyone else had the same idea.
The poor shammes almost made havdallah on water!