This is a little bit more involved, but could be useful for those looking for a more permanent / wall art style case. I built these years ago and they are holding up nicely to today. I like them because there’s glass to discourage kids (or adults :P) from trying to walk the dog with your favorite yoyo and to keep everything dust free. Some instructions (including foam source) are linked below.
https://forums.yoyoexpert.com/t/morning-project-hanging-yo-yo-display-cases/69070