Collect different rain boots around your house. Bring them to primary and stick a song in each boot. Display them on a small table and choose a child to come up and choose a song.
You can also have 6 "puddles" (blue paper blobs). Place them on the ground with a way to sing on the back. Let a child jump on a puddle and sing that way!!!
examples of ways to sing:
-Sing like your underwater (move pointer finger in front of lips up and down)
-Puddle jumper and teacher blow bubbles