@Pachy Well a Christmas tree isn’t really Christian either, it’s an old Germanic tradition which was popularised during the Renaissance and Victorian period, because most of the British Royal family was German. It originates with the tradition of bringing evergreens into the house (usually cut branches rather than whole trees) to symbolise eternal life at the time of the Winter Solstice, the “death” of the Sun. To the old Norse people, the yule tree was Yggdrasil.
@Symbeline hanging bones and meat on your yule tree is probably more traditional than you think.
So you can be excused, whatever your religion.