Paper Boats and Puddles
Our youngest loves jumping into 'muddy puddles' and looks forward to them every time it rains. Sometimes we'll have her put on her rain boots and take a short walk around the neighborhood to find puddles to jump into. It gets your kids out of the house and doing something a little different!
Another fun activity is to make colorful paper boats and placing them into puddles. This was such a fun thing to do. Toddlers don't have the best attention span and the boats don't last too long so it's actually perfect!
I found this tutorial that shows you how to make a paper boat.