Find the best divorce lawyer. Give him that guys card. Then find the other 5 best divorce lawyers. Give home those cards too. Tell him to contact the lower five then the number one. Trust me. He will thank you!)
I would always suggest a nice MITCH ROSEN leather holster. They aren't the cheapest but they are really outstanding. Nice looking and great quality. I had an OWB in a mahogany that was usually concealable with a loose shirt or light coat over top. Tight enough that the gun will snap in place and it's only leather.
Depending on your sense of humor, a Hi-Point, in .40 S&W, as a gag gift.
Put in a nice presentation box along with a single cartridge ... and a couple boxes of ammo hidden underneath the insert.