Salvation Army, Smalvation Army...
I can top that one with ease. When I was a young stud, I used to work a second job during the winter as a rink attendant at the Saint Louis Municipal Ice Rink, down in Forest Park.
Most of it was skating backwards for hours at a time, picking up the pretty girls who fell, and running the Zamboni once an hour. It was easy work for us young hockey players, and Georgia (the top dog in the parks department) used to take care of us guys well, with plenty of hours and adjustments to work hours when we needed it.
However, at Christmas time, there were some additional duties, one of which being the annual Christmas skating party, usually on Christmas Eve. For that day, we half frozen guys shed our wool rink attendant garb and dressed up in costumes. There were Santa, Santa's elves, various storybook characters and animals, all kept in a room back behind the locker room during the summer, serving as a home for wayward mice.
One year, there were four of us who were musically inclined, and one climber among us suggested that we form a small band to blow Christmas carols while so costumed. I opted for an Eb clarinet, figuring light and plastic was best for the situation, and I spent about six hours, dressed as a polar bear (I fit the costume the best), skating backwards in sub-freezing temperatures, faking my way through the canon of carols and other Christmas songs with frozen lips and stiff fingers.
We did get to have all the free hot cocoa that we wanted...
Mind you, I got paid for that as well. (However, I didn't get scale, since this was municipal work rather than union work. We had no worries about the business agent from the musicians' union; they were all staying inside where it was warm.) Was the Salvation Army gig a pay job?