Gameboy DMG (Original/Classic), Color, and Advance Cartridge case
thingiverse
Here are some cases designed specifically for Gameboy Game Cards that have ample space for one cartridge, plus room for additional items like manuals and E Reader Cards. If you're looking for cover images, The Cover Project is a great resource to explore! To connect the hinges, simply insert a toothpick - it's recommended to first dull its tips to prevent any damage.
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