Playing scrabble with a friend, working with the dog on his training, as Karen stated - reading, making a pot of soup, sleeping, and of course, sitting on my butt answering questions and speaking with people here on AM.
I also enjoy reading. Online shopping is great! Cooking....love to cook. Or take a nap, especially if you can listen to the sound of the rain falling....has a soothing quality to it!
Of course, seriously. C.S.Lewis once wrote that people who didn't like walking in the rain probably had mothers who wouldn't let them play in it when they were kids. Exhilarating, especially when it's bucketing down.
My hubby wasn't allowed to play in the rain when he was a kid and he absolutely loves walking in the rain with me. C.S. Lewis has it backwards. The reason why hubby loves it so much is because he wasn't allowed to do it when he was a kid. He grew up with a domineering grandmother so he pretty much loves doing everything she wouldn't let him do when he was a kid which is lots of fun stuff we enjoy doing together as adults.