This year, I was asked to design the 2012 calendars for our office. I wanted to do something new and different but the restriction was that it needed to stay on brand. I came up with two versions. The first is a calendar that uses interchangeable 1/2 letter-sized cards and paper stands. The second version is a full-sized calendar on an 12 x 18 sheet (for those who prefer to view the full year at once).
The interchangeable cards are double-sided (to save on paper and to make it lighter for the paper stand to hold up). I found out how to make the stand from a very helpful tutorial which can be found here. I had to alter it a bit so that it would be able to hold the cards.