obstacles- depending on water restrictions and if playing outside, fill some water bomb balloons with water to hang down. Place down a tarp and add a sprinkler and some bubble or washing detergent to crawl through- ensure solutions are safe for chn.
Scooter race idea- set up cones and use a plastic tube and/or pool noodle for a "gate" kids have to race through. Have them attempt by sitting, and again laying down to work on upper and lower body strength
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!