God and Idols
1 Hear what the LORD says to you, O house of Israel. 2 This is what the LORD says:
"Do not learn the ways of the nations
or be terrified by signs in the sky,
though the nations are terrified by them.
3 For the customs of the peoples are worthless;
they cut a tree out of the forest,
and a craftsman shapes it with his chisel.
4 They adorn it with silver and gold;
they fasten it with hammer and nails
so it will not totter.
5 Like a scarecrow in a melon patch,
their idols cannot speak;
they must be carried
because they cannot walk.
Do not fear them;
they can do no harm
nor can they do any good."
In addition many other Christmas customs have pagan origins, yule log (burned by the Norsemen to honor the gods and bring good luck in the following year), and mistletoe (another Norsemen origins with the goddess Frigga's effort's to save her son with the help of mistletoe and anyone that stands under the mistletoe will never be hurt).
I think the best advice would be to follow the bible's teachings and examples of how Christmas should be celebrated.... If you can find them.