Carrying case for iFixit Manta Driver Kit

I have to carry a lot of things when helping out my grandmother. I needed to do a strength test for the D-ring mounts I wanted to use for making arcade sticks and this felt like a good weight equivalent to make sure these mounts were strong enough. 

You will need the following:
2x M4 Heatset inserts, I used MakerTechStore's.

D-ring Mounts, I used these.

some sort of strap that can mount on the D-Rings, I used this.

I intended this to be printed flat on the bottom face. If you need to fit this on an ender 3 you might get away printing this on its side with some support for floating hole.