Nothing quite like a custom sheath or holster to finish up a neat CNC project.  I came across an article recently on making Kydex sheathes and really liked it.  Looks like very easy material to work with and a CNC’er could definitely kick up the quality and design a few notches.  Here’s the sheath the wound up making in an hour’s time:

The fancy looking belt clip is by Tek-Loc and is available from Amazon among others.  If you don’t fancy a knife sheath, how about custom holster for the various tools you’d like to keep handy at all times?  With a CNC-made mold, much more elaborate designs become possible.