This is a case for the SD2IEC-Adapter from Sordan.ie
https://sordan.ie/product/720/sd2iec-adapter-sd-reader-for-commodore-64-c64-vic20-serial-port/

I could not find an enclosure that fits, so i designed one using OpenSCAD.
I included the OpenSCAD files for you to tweak around if it should'nt fit. I used a CR10 with a 0.4 mm Nozzle and PLA.

Creality

CR-10

No

No

200

10

Supports are not needed but can be used for the "front" part to help with the button-holes. Lay both case parts flat on bed (i had to rotate X-Axis by 180).
Feel free to remix and adjust to your own needs!