Here are a few sites to check out for Christmas inspiration:
http://www.kwernerdesign.com/blog/ -Kristina has a daily Holiday Card Series where she posts a cute card along with a video tutorial.
http://ellenhutson.typepad.com/the_classroom_new/ -12 Tags of Christmas with a Feminie twist.
Onlinecardclasses.com - Holiday Gift Bundle class and several Holiday Card classes.
http://ablognamedhero.blogspot.ca/?m=1 -a Christmas-travaganza with a different project each day.
Let me know if you find any sites that make your heart go pitter-patter!
Here are a few Christmas cards I've done.