I started with the files from Zurno, who used the Tool box parametric by Yanev, which is the same model the Rugged Box (Parametric) by Whity 

I added the turtle pattern to the top lid for design. On the geometry side, I took out the two side dividers inside, as well as adjusted the location of one of the three remaining dividers. I did this so I would have a slightly oversized compartment to one side, to hold my health tracker / counter dice box. 

 I am using a total of six 4-40 bolts with double-nuts on the ones that I have printed. apparently, M3x30mm SHCS would work as well.