Break your group up into groups of no smaller than five and no bigger than ten. Each person in each group now must become one of the following body parts -- eye(s), ear(s), mouth, brain, leg(s), arm(s), hand(s), etc. You can add or take away body parts, depending on the size of your group. Just keep the most important ones in place. Instruct each group to do their best to perform a simple task, with each body part performing only its function. Here is a sample task. Place a Bible across the room and have each human machine attempt to "walk" over to the Bible, find Romans 12:4 - 6 and read it out loud. Remind your machines that each body part can only perform its function. For example, the legs cannot go to the Bible until the eye tells the brain where they are and the brain tells the legs how many steps to take and in which direction. This works great to illustrate how each member of a church or youth group is important and that we must all work together as part of Christ's body. A suggested Scripture passage is Romans 12:4 - 6.