Exploring raindrops and clouds in preschool! I could see this for an older grade's science project too!
Memoirs of a Goldfish great art project that will let the child create their own hand print fish choosing the colors they want and exploring other creativity additions.
Creativity and the arts
Water Drop Collage …
Teaching 2 and 3 Year Olds: WATERCOLORS ON ICE BLOCKS
Raining Sponge Experiment - easy science for toddlers
Winter Activities for Toddlers - My Bored Toddler
I would use an anchor chart similar to this one to help students remember what bodies of water we had talked about.
Playing with water drops on wax paper More
Fun Kid Crafts
What dissolves in water? A simple experiment from the pantry.
Water Absorption Activity Fine Motor Science skills
Little Bins For Little Hands Blog