I totally approve of the headcanon that Genji’s dragon is a bit of a derp compared to Hanzo’s two and that somewhere between Genji’s and McCree’s concepts of Christmas, there is a considerable amount of shenanigans that ensues.
They never get a big tree ever again. Or that many decorations. Or tinsel, for that matter. At least it was plastic and not pine so nothing actually caught fire.
I raise to your consideration: the DMLE’s Christmas Party.
Believed to be non-existant or at least tremendously boring by the average, ill informed MACUSA worker, it is actually the insiders’ tip for a wild time - or, at least, one of the best options if you want to get really drunk and have fun doing it. Many people would think Graves controls the alcohol stock to prevent exactly that - truth is that he just wants to make sure he gets his fair share of it. He has a secret weakness for eggnog, not that he’d tell anyone (anyone can tell that, anyway; he’s not as subtle about it as he thinks).
The Secret Santa gifts are handed out - every other year the gifts are deliberately useless and stupid, which can lead to general amusement. The year Graves is recued, he gets a little Secret Santa gift from every auror as an apology for not noticing that something fishy was going on with him.
Usually, there are no additional guests allowed, because in honesty they enjoy having this awesome party all to themselves, but Tina insisted on bringing a plus one and she got the short end of the stick so many times recently, that “fine, Goldstein, bring your damn outsider along“ and that is how Newt Scamander ends up on the office party, much to everyone’s delight. Delgado has an insane amount of fun trying to get Graves and Newt to stumble across one another under a mistletoe. He may or may not end up with a lot of additional paperwork next year because of that.
It is also Delgado who makes everyone sing traditional Christmas songs from time to time, not that anyone is sober enough to object, at that point of time.
The Christmas tree in the office is large and beautifully decorated. Something in Newt’s pocket seems to try to get out to snitch the twinkling golden star from the very top…
All in all, everyone has a great time and the highlight of the evening is definitely when someone makes it snow inside of the rooms for duelling practice for a bit so they can all have a big snowball fight, first in teams and later on all against all.