I liked the original version made by @51m0, but wanted a more secure clasp.  I liked the clasp and hinge from the “Pill Box 2.0”, so I decided to try adding that in.  
 

Please get the bit holders from [https://makerworld.com/en/models/615561-case-for-miniware-es15?from=search#profileId-1512886](https://makerworld.com/en/models/615561-case-for-miniware-es15?from=search#profileId-1512886) so that you can still support the original creator.
 

I made all modifications in Orca Slicer due to my nonexistent modeling knowledge.
 

I recommend printing in PLA with at least 3 walls to strengthen the hinge.  Use supports on build plate only.