I created this to de-clutter my workbench. It is modeled this to fit 1-¾" x 4-½" fastener boxes. You could probably scale it to fit your specific needs. 

I printed this without supports but there is one small area underneath the half moon cutout that could use them. 

3 layers with 15% infill on an MK4.

Thanks for looking/making!

-Trent