(hobbymuvesz.hu) is a Hungarian online shop (and not only); I really like their hobby products, I use them all the time. But they are not sooooo affordable, that is the only down-side. I happened to do something similar to this calendar (well, only the concept), and I thought I was being original. Oh well... Pictures of my calendar comming up soon.
I just Googled "Christmas Calendar" and some weird site came out from the search (guy-sport.com), but I was once again convinced that one can find the weirdest things in the weirdest places. Hehehe, the twelve days of Christmas --Cat calendar. So sweet! DIY people, try making this one at home :)