If I were keeping a list of the less frequently mentioned reasons why I like on campus meetings for courses I teach, seeing students' doodles would be on the list.
These are all from RUS 101.
This one I got the day we had black tea with jam during class. I'm sure these aren't intended a teacher gifts, but they sure seem like it. Especially when you doodle class material. Oh, do we love it when you doodle course material.
Here is a link to just one doodling study for you social science nerds. Critique away.
By the way, I've been called out. I have told students to stop doodling at times because it distracts me. However, the last time I was very distracted by someone doodling they had a bunch of different colored pens and were switching back and forth throughout class. I had to look. Even teachers get distracted.