RE:
https://www.youtube.com/watch?v=FFpZFnJ6ZT8
Odd that there were washing machines on stage doing loads of laundry...
How about chicken instead?
Over the years, Geddy on bass went from large stacks of Ampeg amplifiers to just using a bass preamp, then sent his signal through the PA system. But this meant that looking at the stage from left to right, you had several huge stacks of Alex's amplifiers, to a huge drum kit at center stage, and then nothing on stage behind Geddy. So he started putting things there. His had washer/dryers, vending machines (where road crew would come on on stage to buy snacks during the concert) and one tour, they actually had rotisserie poultry cookers!
In the case of the dryers, the laundry was special concert tour tee shirts, and during solos, band members would throw them into the audience. Those were very unusual shirts, and became very rare and valuable concert swag.
Mark