I put sticky notes on my bathroom mirror. Sometimes in the middle of the night I will think of something else that I need to remember & up it goes on the mirror. I've been known to have 3 or 4 plastered up there at one time.
I've been putting notes under my machine pressure foot for years now. The bathroom & sewing machine are the two places I frequent all day long...oh, and my computer. I used to put sticky notes on my monitor screen until I discovered the "sticky notes" app on the computer. It was already on my computer when I bought it about 3 years ago....love it!