Here's a remixed SSD caddy for the Atomos recorders (Big thanks to GrouseHouse!). I have the Ninja V and it fits great.

I removed some material to lighten it up and rearranged the two pieces so you can print it on a smaller bed if you don't know how to split them up.

You can add your own logo via an svg file or other means. I used Blender 3D to boolean the logo into the SSD caddy.

The original case it 26.3 grams and my 3D printed version with the lumix GH5 logo with 10% infill is 31.7 grams. The original STL file (which I started from) with 80% infill is 47.5 grams. 80% is too much. Go with 10% at the most.