I recently purchased this LEGO storage box to keep my Field Notes in. It’s perfect size and you can also put some lego stuff up on the lid!
Links from the video:
Leather cover for field notes $17: https://amzn.to/3J7PHpL
Urban camping lego set $49: https://amzn.to/4apxWhr
Ikea lego storage box $17.99: https://www.ikea.com/us/en/p/bygglek-lego-r-box-with-lid-white-50372187/