@me I use Carolina A7 Mini Composition Books, because they fit in a shirt pocket. $1.99 for a pack of 4 at Bi-Mart, so they're a fraction of the price of fancy notepads. And yet they have a sewn binding, and the paper is adequate. Part of my everyday carry.
https://www.bimart.com/carolina-pad-mini-memo-comp-book-4-pack/p/894911