Funny enough., I also got a "..mas" present for myself today, viz. the Nikkor 70-180mm f/2.8 Z. Probably a rebadged Tamron, but who cares as long as the price is (nearly) OK and the lens handles well on my Zf. It even accepts my iShoot tripod bracket (for the 105/2.8 MC Z) and functions nicely even with the TC1.4Z. Perhaps not so 100% perfect as I had hoped for in IR shooting, but will do adequately for apertures in a sensible range down to f/8-f/11.
If you love somebody set them free