This model is NOT pristine. I am not a designer, but I wanted a handle that would work for this file: https://www.printables.com/model/803295-zimaboard-modular-storage-enclosure

Because I am not a designer, I'm using tinkercad to piece together what I needed. 

I ended up superglueing this to the side of the modular design linked above. However I tried to design it to use the screws on the side of the HDD case to hold it in.