3D Printed Kegerator Beer Tray!
Support pieces (left and right) contain a void for either gluing a strong magnet to attach to a steel walled chest freezer, or simply just apply glue and stick it where you want it. The tray itself clicks into place with the clip feature on the back face of the supports.
You will need a large build area to make the tray (and ensure that you get proper adhesion to limit warp). If you can't print on that size split up the tray base and cover into 2 parts, print, and glue or fuse together with ABS juice (acetone + ABS).