Since I made a CD/Disc case, let's make one for the cartridges too. This more so focuses on the small-ones like gameboy, DS, or Switch cartridges, not something like N64 carts, but if you can do something cool with them, those are acceptable to post too.
As of now, I'm planning to get some ultra-small 28-case DS cartridge I have for storing all of my DS + 3DS games in an efficient manner, but I might change the case I end up getting if I can find a better one (preferably, I'd want at least 50 games per case, and I'd want them to be very slim as well, similar to the disc cases). As for gameboy + gameboy advance, I'll have to see. Luckily, the soy consumers have actually done something good for me for once, they've allowed a market to flood in with tons of these types of cases, so it's easier finding what you need on this end. I likely won't get anymore games or very few more for the Nintendo DS + 3DS, but if I did, it would be useful.
I'm also discussing this here because of the fact it's pretty easy to find many DS games without a case nowadays, whereas there probably isn't as many for the disc games. Switch games can technically be found without a case, but I doubt many people are doing that. If I find anything good for the switch games which are also hyper-slim, I'll gladly post it in this thread, but otherwise I'm probably going to discuss DS+3DS game cartridges the most as they are the easiest I can discuss a matter like this on.
small game cases are nice and im going to love getting games for both cheaper AND in a smaller form-factor. altho if i end up getting them, I might want to get a case which can store like 100 per case ofc, or even 50 per case.