This is my take on a video game display stand the clips snap on the side of the cartridge trays allowing you to mix and match. It also uses much less plastic than a solid display stand.
You need to print the following
1 left foot
1 right foot
5 trays of your choosing
I did the design with the intention of 5 rows, but some people have had success with up to 7 rows.
I also sell these as complete units on my website