TENNIS FAVOR What to do with all those old tennis balls? Simply cut out the top of the tennis ball, insert some type of filler-Easter basket grass or colorful tissue paper. Put in candies, gum, chapstick,coupon from local shop or proshop whatever little favors you have. Wrap with clear plastic so tennis ball stays upright. Tie up with a ribbon, add a name tag, and use as a favor or placecard.