A marshmallow (or other thing) popper from Real Simple. Cut off the bottom of the cup, cut off the top of a balloon, put them together, and then sling pop things around. Add some pretty duct tape around the cup to hold the balloon on better.
Kids would love to decorate their own rings and put their names on them. When their ring lands around the roll there could be a special activity or prize. Great idea - thanks for sharing it! DIY Paper Plate Ring Toss Game - great for kids!