Have 3 or 4 kids put one end of an ordinary drinking straw in their mouths. Have them all start at the same time and try to get their mouth from one end of the straw to the other without using hands, only mouths and tongues.
Idea from Young Life
Also, see Straw Game
Jonathan McKee is the author of over twenty books including the brand new The Guy's Guide to FOUR BATTLES Every Young Man Must Face; 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.