Gather your group together and see how quickly they can tackle the oh-so-simple challenge of counting to ten. The catch? They cannot spend any time planning a designated order and only one person can talk at a time. No single person can say two consecutive numbers. If two people speak at once, the group must start over at one. It's not as easy as it sounds, but if they get good at it, ask them to turn their backs to each other and try it again.