When time permits, I doodle on the back wall of the agency together with a better doodler, Bae Soo Yeon. Slowly but surely the wall should eventually (both fingers crossed and thumbs held) be completed. There's an Instagram you can follow: TheBackWall
I also prefer doodling on paper and during meetings.
As an extra reward for scrolling this far, here's what I've done to celebrate the past two Christmases in the agency.