Seconding a5. Also scope jetpens, they have a huge variety of a5 paper that's pretty cheap and the variety can be fun. I also got a multi color pen that makes

Seconding a5. Also scope jetpens, they have a huge variety of a5 paper that's pretty cheap and the variety can be fun. I also got a multi color pen that makes note taking far more organized and effective for my ADHD brain, ESPECIALLY when I go back to review.