If you’re looking for a simple exercise that gets people collaborating in a short amount of time, you may want to try The Marshmallow Challenge, a design exercise that fosters collaboration, innovation and creativity.
What is the group task?
In eighteen minutes, teams must build the tallest free-standing structure out of 20 sticks of spaghetti, one yard of tape, one yard of string, and one marshmallow. The marshmallow needs to be on top.
I’ve done this exercise several times, and highly recommend it. To learn more, watch this TED talk by Tom Wujec: