[ido]

Unless you’re invited to someone’s home to celebrate together you wouldn’t buy random friends a Christmas present. If you’re celebrating together (or if you’re relatively close family) you would buy 1 present and sometimes this would be something small/symbolic (for a child it’s more likely to be a “real” present like Lego or a board game).

But Germans generally don’t celebrate holidays in massive gatherings, I would expect my mother in law to join us, or maybe 1 other person. It would be unusual for the number of people to reach double digits.