Balloon Kite
For those younger kids who can't quite fly a kite yet, tie a helium filled balloon to a very long string, then tie that string to their wrist. If you want to jazz up the balloon you can tape crepe paper to the balloon to make a tail.
More Outdoors:
Balloon AloftBalloon Kite
Brr Bath
Chalk Roads
gooooooo outside
Improvised Tub Toys
Outdoor Safety Tips
Rain Showers
Sheet Run
Sidewalk Roads
Star Gaze
Water Balloon Yo-Yo
Waterbed Mattress Jump