For a weekly challenge in the Hogwarts at Ravelry group I made this pencil bookmark. The challenge was to make a muggle item. I felt that this was a 2 in one muggle item: a pencil and a bookmark. Neither one of them seem to have a place in the wizarding world. Here is the free pattern for it.
Then I thought that it would make a cute back-to-school doll scarf, because I have no need of a bookmark (because I mainly read from my kindle). Maddie looks pretty happy with it.