My family always celebrated rather simply and without too many traditions involved. Set up the tree the night before Christmas, eat pork or turkey for lunch and that's everything which separates Christmas from any other day. We're not religious and we're third generation urban family with background from different regions so old traditions didn't hang around. Also, my family never had gift giving tradition. The companies my parents worked for usually gave presents for workers children (candy and toy cars) and that was it.
Modern consumerist Christmas is a thing only in last ~15 years. Before that religious people preferred St. Nicholas in early December, and secular people preferred New Year (and Grandpa Frost, the commie Santa).
Of course, my region has a bunch of traditions for every religious holiday, but I don't even care to read about them, let alone follow them.