How great is this project?  This card organizer has pockets for each month and has a perpetual calendar so you can use it year after year.  I used this tutorial with some modifications.  I relied on designer paper for decorating the organizer and in this particular one I kept the pages white to save on cost (I eventually sold this at a craft show).

This is the inside of one that I made using all double sided paper.  I really love how it turned out.

Instead of using a bind it all, I punched holes through all the pages.  I added eyelets on the front and back pages.  I used some hemp twine to tie it all together.