Go to the art museum. (mm.. though I do this in the rain or the sun...(lol))
I get excited when using my Monet's Water Lilies umbrella.
Look for frogs. Ribbit.
Do nothing but watch recorded shows.
Watch videos.
Pray that the trains will run if at all possible!!
Take a walk (with an umbrella)
Go back and watch my favorite dramas.
Watch various DVDs at home.
Get wet on purpose. Rain is the only way you can experience water falling from the sky, right?
Moreover, since I love water, I can forget things that I want to forget.