WriteWrite challenges on small pieces of paper for each of the kids, such as "Do a dance," "Kiss a friend, " "Sing a song," or "Do a somersault." Stuff one note in each balloon, blow up balloons, and toss them onto the party floor. Have the kids try to pop a balloon. When a balloon pops, everyone must stop moving. The guest who popped the balloon must read the instructions on the note and perform the challenge.