I use a lot of large Post-it notes as mnemonics. Mostly dimensions and crude sketches that survive long enough to for me to get to the computer or out to the shop.
Anyway, I looked a pad of them the other day, and it was crinkled and nasty, so I said, self, these need to be on a mini clipboard.
Seven minutes later, they were, and I had the design for two different sizes.
You got to love Fusion 360 and the working together!