when we were lining up to get the LAST harry potter book, all of us that were there at like before 8:30 am (could only get the books after 9:01 am here) got to pick a ribbon out of a witches hat. and that ribbon was the house you were in for the day.

twas just something to amuse us while we waited for hours (I was there since 7 am - 13th to get the book ) and I gotsa Ravenclaw. happy happy =)