This DIY was as easy as finding an old window at the local antique shop and repurposing it as a calendar. I had a friend that is handy (thanks Mr. Josh) put slider holes - for lack of a better term, the holes that fit a screw and then slide into a narrow line to be secure - in the back. He even hung it for us!
And now I've got a rockin new weekly calendar. And if I change my mind about the calendar, it still looks rockin and I could display pics.