Looking for a no-cost outdoor event space? It might be right in your own backyard. Use the open space to set up games like a sack race, bean bag toss or scavenger hunt. Have other kinds of crafty materials on hand, such as sidewalk chalk, and turn your little artists loose on the driveway.
If there's an artistic adult or teen among the chaperones, ask if he or she would consider offering face-painting services to the participants. Child-safe face painting kits are readily available; you can even get a how-to book (complete with paints) from Klutz Publishing if you need a little more guidance.