Best idea for wall mounted collection?

Hi - New to this site and glad I found it!  I'm interested in collecting as many of the 862 cartridge titles listed on this site as possible, and want to mount them all on my wall.  Wall space is not an issue, but I would like to have this many "slots" or placeholders mounted right away so that I have a predesignated place to put these when they come in.  (I am going to create labels for each to make it really easy to see what I'm missing).

I don't want to stack these at all, just want independent slots for each cartridge.  I've come across the old school "cartridge library" solutions which hold maybe 8 or so, but I'm wondering if there are any other larger options.  (besides building the whole thing myself).  I don't intend to store the boxes at all, just the cartridges.

Thanks!