Bravo!
Since forever I have used a variation or other of what you suggest! Learned from my wise Mother. She was never without her small, palm size, 3 ring notebook, loose leaf notebook.
As of late I've gone to a yellow, legal pad kept next to my lap top. Your technique aids me in all the things you suggest as well as simply remembering! Recalling what I have to do on any given issue for the day.
Theoretically at days end I might have one to three pages of scribbles that unfortunately are not worthy to store away. The contents are just so happenstance, only fit in that days puzzle.
Liked your more filled out concept however! Will attempt to work these in.
Thanks and well done.