Arkham Horror is one of my favorite games ever. My partner and I made these little crates for it together!
https://s3-us-west-2.amazonaws.com/secure.notion-static.com/62a5fb47-c15d-4c78-8750-67c333e2ceb6/Cube_sketch.mp4
Another thing that I love doing is doodling on our campaign logs. :)
Original here
Personalized Arkham card