I've played this game with Woodcraft Folk groups and with groups of adults. It's a great way to get people to find ways to communicate with each other in imaginative ways.
Rules of the Game
All you have to do is ask your group to line up in height order. That's easy. All they have to do is look and compare.
Now ask them to line themselves by age. Youngest on the right and oldest on the left. There's just one rule. Nobody is allowed to talk but they have to discover who is younger and older than they are and find their place in the line.
You can make things more complicated by asking them to line up by birth date. January 1st on the right and December 31st on the left. Again all without talking.
You can come up with your own categories for line-ups. Try to find some that are not numerical but alphabetical instead. For instance you could ask them to line-up by the first letter in the name of their street. If the letter is the same then go to the second letter.