During Toffler Associates training courses, we (like many other organizations) use a simple team-building exercise called The Marshmallow Challenge. Here’s how it works: the large group is broken down into teams of about five people. Each team must build the tallest free-standing structure possible out of 20 sticks of spaghetti, one yard of tape, one yard of string, and one marshmallow. The marshmallow must end up on top. Each team has 18 minutes to get it done. The tallest structure wins.