Hey all.  I had an old mini file kit in a beat up box that was being held together by duct tape.  So, Fusion 360, ty very much, I designed my own container to hold them.  It holds 14 files.  Simple print, no supports.  Just use the default for PLA.  I did use a brim because it is a little tall.  Will keep it from falling or failing.  It is very tight, so i actually had to sand the bottom piece where it slides into the lid.  You can print the top just a bit larger if you want, but then the outsides wont match up.  I just sanded it.  Nice and tight and wont come loose and your files fall out.  Print and load some pics of your print.  Thanks