I definitely consider myself a Ravenclaw, because I'm big into nerdy, intellectual things. The rest of my head canon is alternately very specific and really vague, as I've spent a lot of time wondering about Sorting and none about who's wand would be what. But it involves Oz spending full moons in the Shrieking Shack, Buffy being captain of the (Quidditch Cup winning) Gryffindor quidditch team, Tara being the charms professor and head of Hufflepuff, Xander being muggle born, Willow being the best in her year at potions, Wesley, Fred, Ethan Rayne, and Anya as professors (DADA, Arithmancy, Transfiguration, and Muggle Studies, respectively), and Cordelia as Gryffindor's prefect, and later Head Girl. I'm really starting to actually want to write this, now.