Modular Cartridge Storage Box

Meet your new favorite way to tame the Nintendo chaos of those loose cartridges in your drawer: a clean, modular cartridge storage box that actually keeps up with your collection.

This single base box accepts a full set of swappable inserts so you can mix Game Boy, Game Boy Color, Game Boy Advance, Nintendo DS, 3DS, Switch and Switch 2 cartridges in whatever combination makes sense for your library. Each insert is a snug, vertical rack that lets you flip through games at a glance, instead of digging through loose carts or juggling a pile of tiny cases. For GBA, DS, 3DS and Switch, you can run dual‑layer storage by stacking a second insert on the built‑in ledge; Game Boy and Game Boy Color get a single layer to keep those taller carts accessible and easy to grab. 

The lid is fully customizable, with a flat, textured top ready for snap‑in logo plates – GB, GBC, GBA, Nintendo, NDS, 3DS, Switch and Switch 2 designs are all included so you can theme each box to the era or system you’re storing. To connect the top lid and the bottom box and the hinges, you would need a total of 6x 25mm M3 screws (link), giving you a sturdy, toolbox‑style feel without extra hardware, and the low‑profile footprint means it looks good on a desk, shelf, or drawer next to your consoles. The box started as a remix of this fantastic model: Super Customizable Rugged Box in OpenSCAD

 
With all inserts loaded, you can comfortably store up to:
    •    28 Game Boy or Game Boy Color cartridges in a single‑layer tray
    •    56 Game Boy Advance cartridges in a dual‑layer configuration
    •    136 Nintendo DS or 3DS cartridges (two full layers of slim slots)
    •    192 Nintendo Switch or Switch 2 cartridges across top and bottom layers

Of course, the real magic is mixing and matching: run DS on the bottom and GBA on top, dedicate a whole box to Pokémon, or build a “best of” chest with every handheld generation in one place. Print one base, a few inserts, drop in your favourite logo, and you’ve got a compact, collection‑ready box that finally does justice to all those cartridges you’ve been hoarding.

If you have a request for other cartridges or would love to see a mix of handhelds in one insert, let me know and I will happily design these configuration. A smaller, one layer box for GBA, NDS, 3DS, Switch and Switch 2 will be available shortly too if this is too large for you.