The odd little things I notice:

I am "Middle C" this year.

I was home over lunch, and took some time to practice (because I do it better when I'm not completely tired at day's end). I remembered that each key on the keyboard had a number stamped on it (from exploration of the piano YEARS ago - actually when it was still in my grandparents' house - back when it was still acceptable for me to poke and prod and pull things off stuff). So out of curiosity, I angled the lid up so I could peek at the back of the keys. Yup, the numbers were still there. And #40 is Middle C.

So I am Middle C this year. And next year I will be a sharp key (or, D-flat, I suppose, if you want to think of it that way).