I delivered the Sunday paper in Massachusetts for many years (not quite Minnesota, but close).
I worked the games at an amusement park for 2 seasons (not as fun as one might think...).
I painted houses for a summer making minumun wage.
I worked at a gun range loading skeets on to traps for 12 hours a day on the weekend (my boss's name was Dick Masterpole).
And the winner:
I worked in a factory that made the metal Christmas tree stands. I was part of human assembly line- my job was to put a bowl on the conveyor belt every 5 seconds for 8 hours a day, 5 days a week (and the factory was 110-120F inside).