This is my take on it.
I loved how Sarah did hers, but I didn't want to print it out with that much colored ink. So I just made my own and printed it out on a piece of Christmas scrapbook paper.
Several people have asked if I actually change out the number every day. Really???...who would do that??
I just keep a red dry erase marker behind the frame and ERASE and REWRITE every day.
Here is the pdf of the one I made if you want to print it out and make your own!