Many beliefs and religions have a holy days around this time of year, so I don't feel uncomfortable in saying what the sign says. In fact, as Wikipedia says, the word holiday is derived from the notion of "Holy Day" and referred only to special religious days. So it appears to say "Happy Holidays" is not quite the politically neutral term many may think it is.
So anyway... I wish you all "happy holy days" for whatever your beliefs are! And if you take Christmas, or alive on 12/25 -- have a great and merry one, too!
Taken at the Inland Baptist Church a few miles west of, Interlochen, MI, right on US-31. Their sign often has a clever saying or message.
The black border is part of the sign. I added a simple green border to make this a bit more "Christmasy!"