Attached Link: http://www.geocities.com/electroglyph2002/3Dresources/freestuff/free.html

I have a couple of snowflakes in obj format on my crappy site at this link. You could also try searching freestuff here for other words in case the poster didn't include Christmas in the keywords. I remember a nutcracker, sugarplum fairy, snowman, candycane, ornaments, etc.