Staples is offering a neat free custom photo 2014 calendar that has all of your friend's pictures on their birthday months. However in order to get this, you'll need to pick it up at your nearest Staples and allow access to your Facebook account to pull the photos. Don't worry though, I've got you covered on removing access once you're done. Simply use this guide I wrote starting with the “Delete A Facebook Application” section.
I will admit I haven't had a chance to do this offer myself yet, but only because most of my friends are knuckleheads who have their birthdays set as December 1800.