I just used my "palm" pilot. I wrote on my hand. Yes, I still do this. I know it is childish, but I don't care. Actually, this is one of the things that I love about Chris - he does it too! It doesn't matter that we're in our 30s.
As I'm getting older, I am noticing that my memory isn't what it used to be, or, I just have "so much on my head!!" that I can't keep everything straight. So, I wrote "Downloads 3" on my hand just now to remind myself to take care of three things at home that I've been meaning to download onto my laptop there.
I use that fleshy part of my palm, on the side, just under the thumb on my left hand (as I'm a rightie). It isn't very creased there and is very smooth for writing. Chris tends to write in the middle of his palm, but I always remember my cousin telling me when we were at the bars in Seattle that the palm is a bad place to flirtily write you phone number on a guy's hand because when he picks up a beer, the sweat from the bottle could wash away your digits. So, to this day, I still don't write on my palm. Although, it isn't the sweat from a beer that I'm afraid will wash away, it is the compulsive hand washing and hand sanitizer at my desk that I'm guessing would do that trick.