Mick wrote in one of his books (either the coffee table or autobiography) that they tried to have an inflatable penguin behind or to the side of the stage on their stadium tour in '76 with the Eagles, but it would never stay inflated and would always collapse. It was never intended to go out over the crowd, and was scrapped after a few shows. He joked that penguins were never meant to fly, so I think he was fully aware of the irony. I think the giant inflatable dildo at Beastie Boys shows in the '80s is probably the funniest stage prop ever (used when they opened for Madonna, no less)
