My daughter is now old enough that I can ask her to remind me of things, and there is a better chance that she'll remember than that I will. Of course, this only works with things that she values, but I still find it to be quite practical for my own sake, with the added bonus that she gets to exercise her memory and enjoy the rewards of doing so.
I realized this explicitly one morning when I told her to remind me after school to show her a video of hang gliding. (She is still fascinated with flying and I've been telling her about all the ways that people can fly, even though we don't have wings.) I said, "I can show you a video of hang gliding. Remind me after school. Tell me that you want to see the video of hang gliding. Can you say 'hang gliding?'"
"Good. Hang gliding. Remind me after school, ok?"
Driving home after school, after we had talked about what work she did at school and what she wanted for lunch, she suddenly said,
MOMMY! YOU FORGOT THE HANG-IDING!
It's all about values.