Nobody at Hogwarts needs a calendar to know that Christmas is coming: twelve fir trees appear in the Great Hall, Dobby dreams of socks, and someone has definitely forgotten their essay for Snape. If you have to get by without house-elves and an enchanted ceiling, you will just have to count the days another way.
Behind the 24 doors of the Harry Potter Advent Calendar with Stationery you will find writing supplies in a cute comic style, such as coloured pencils, stickers or a ruler. On the front, Harry, Ron, Hermione, Dumbledore, Snape, Draco, Dobby and Buckbeak gather outside the castle, waiting for 24 December just like you.
For everyone still secretly waiting for their letter from Hogwarts. Until the owl arrives, at least your stationery is ready. ;)