Divide the group up and give each team something that they need to act out for the other groups to guess. Suggestions: poison gas in the room, laughing gas, bad odor in the room, etc. You don't need to make it a contest, but if you want to, have staff judge which group did the best.
Jonathan McKee is the author of over twenty books including the brand new The Bullying Breakthrough; The Teen’s Guide to Social Media & Mobile Devices; If I Had a Parenting Do Over; and the Amazon Best Seller - The Guy's Guide to God, Girls and the Phone in Your Pocket. He speaks to parents and leaders worldwide, all while providing free resources for youth workers on TheSource4YM.com. Jonathan, his wife Lori, and their three kids live in California.