When I throw a kids party and there are lots of guests, I usually divide the kids into two teams that way we can either rotate the activities from station to station or have them compete against oen another with a bit more organisation and team spirit. I make little paper badges to identify who is who – and this was done at the Llama party using the paper party circles for TEAM LLAMA and TEAM CACTUS. These are simply cut out and pinned onto their shirts with safety pins. One could also use cute pin badges (I found cacti ones from Meri Meri and llama ones from Paperchase – these ones I gave to the team captains and as prizes).