At the moment, there's the tripods; there are sports bibs. That doesn't have to be the case. Maybe there could be different costumes for different roles within a team; or maybe the people presenting the game need costumes, or someone running around the space as a target has a costume, or something else entirely. Maybe the tripod isn't a tripod, but an enormous teddy-bear. Maybe it's a balloon that's gradually inflated over the course of the game. Maybe it's a perambulator with a goldfish bowl inside, who knows?