I found the Analogue Pocket Case by Drew Heavner was the best Analogue Pocket case out there. However, I didn't like that the lid was only secured with magnets. I like the design of the Parametric Rugged Box by Whity so I decided to combine the two.

In addition, I wanted additional game storage, so I took the game slots from the bottom box and put them in the lid as well but made it taller to fit two games in a stack.

Hard Parts - Print using any hard material (I used PETG)

1. Bottom Box
2. Lid
3. Latch (2x)

Soft Parts - Print using TPU

1. Bottom Insert
2. Lid Insert
3. Screen Protector
4. Box Seal (optional)

Additional Hardware

1. 6x M3x30 Screws
2. 8x 6x2 Magnets (I had a bunch laying around from Gridfinity)

Assembly

Fit was tight enough on the insets to where I didn't need to glue them in, but feel free to do so if desired. Note that the Lid Insert is orientation specific in relation to the Bottom Insert so the Screen Protector sits in the correct orientation in relation to the Analogue Pocket.

Super glue the magnets into the holes in the Lid Insert and the Screen Protector ensuring you have the correct polarity.

Attach the lid and latches using the M3x30 screws.