More to explore:
40 Ways to Keep a Toddler Busy...some ideas I haven't seen before. I especially like play-dough filled balloons.
Repurpose a large pump dispenser to fill water balloons.
How to build a simple wood water balloon launcher - this is SO fun!
birthday morning balloon avalanche, once they open the door on the other side! so fun
Water Balloon Name Game~Fun Summer Learning Activity from Fantastic Fun and Learning
Kool Aid play dough
32 Of The Best DIY Backyard Games You Will Ever Play
Balloon Racers - fun kids activity to explore #science during the #summer!
Balloons filled with whole cloves, salt, spices, whole peppercorns, tea, For great sensory fun!