Our group does that ! We all take it in turns being DM, but they always try to fix it so that my turn comes up at Christmas.

That's because I've got a long-standing tradition (probably been doing it about 40 years now...) that if I'm running an adventure at Christmas time a grubby, incredibly bad-tempered gnome turns up dressed as one of Santa's Helpers and gives out notes with details of presents for each character. I try to make them highly personalised, as well as mildly humorous and (if possible) slightly embarrassing.

I wrote a Hive post a few years ago with a few examples... @alonicus/worldbuilding-prompt-323-exotic-gifts