Balloon Rockets - I've done this in several science camps I've conducted. Kids have fun with it. But, when the balloon deflates it may fall off the straw because it's surface area changes - another good thing to show and explain to kids.
Best Active Indoor Activities For Kids Fun Gross Motor Games and Creative Ideas For Winter (snow days!) or for when Cabin Fever strikes Awesome Boredom Busters and Brain Breaks for high energy Toddlers, Preschool and beyond - see
Rainy day spring craft : Adorable decorated paper umbrellas for kids to cut out and color in. Glue to paper and create a rainy day scene. Great art craft for older kids and younger kids to do together. How can we link this to God on our rainy days?