Many people still regard Christmas as a religious holiday and forget that plenty of other holidays are celebrated this time of year or that some of the people who celebrate various holidays are not religious. This can sometimes make it tricky for an atheist to navigate the holiday season.
For those of you who want to send holiday cards this time of year but aren't interested in those which promote assorted Christian nonsense, check out these cards from the Order of St. Nick. It isn't every day we see products which can be branded "by atheists, for atheists," but I've been assured that this is indeed the case with these cards.
If I had the urge to send cards to anybody this time of year, I'm sure I could find some here that I could use.
I also like these atheist Christmas cards (pictured here) available from Amazon.com. I probably wouldn't send them to religious friends and family members, but they would be good for any other atheists to whom I needed to send cards.