Fans traditionally throw octopuses onto the ice at Detroit Red Wings games!

This bizarre ritual was begun in 1952 when the Wings were making a run at the Stanley Cup. Pete and Jerry Cusiamo, a pair of brothers who owned shops in East Detroit made the odd decision to throw the creature out on the rink. This choice was not as strange as you may think though! Back in those days, there were only eight franchises in the entire NHL, so a team only had to win 2 eight-game series to take home the cup. The octopus's eight legs were intended to symbolize each of the victories required for Detroit to win it all, and the squad delivered - by sweeping ALL eight games! Therefore, the multi-legged cephalopod has been considered the team's good luck charm ever since! (source)