Children say the funniest things, yet all too often, I seem to forget them after a day or two. I'll start telling my husband.. "C said the funniest thing..." and then I can't quite remember. Or I get it a little mixed up and it's not nearly as funny as I remember.
So I started writing down the funnier moments of the day. I keep a jar on my desk, and when the kids say something particularly worthy of recording, I grab a scrap of paper (phone bill, envelope, chopstick holder.. whatever is lying around) and I quickly jot it down. I read about Joan Didion doing something similar when her daughter was a young girl in The Year of Magical Thinking.
The jar is filling up quickly, and when I'm having a below average day, I reach in and pull out a quote.. and suddenly I'm laughing and running to hug my little comedians.