Maybe it's a little early to start thinking about next year, but this calendar from Snow & Graham ($16) is pretty charming. It's about 5" x 5" and comes with its own desktop display case. Each month features a card with an illustration on the back. At the end of the year, you can flip the cards over and frame up your collection of 12 art prints.
This little number is available at many stores including Greer Chicago, Virtu, and See Jane Work. There's also a hanging wall version at Paper Source and Peek Keep.