For some reason I've always wanted a perpetual calendar since I found out what perpetual calendars are. I finally got one! It's from our paper rep over at Frank Parson's and showcases their Mohawk paper lines. Each page is a different paper they offer.
If you don't know what a perpetual calendar is, it is a calendar that you can use every year! How very clever and green! There are many styles, mine (below) has 3 flip pages: the left has a page for Monday through Sunday, the second has the numbers 1-31 and the last is January through December.
Here is another example: