I made a costume, hat, wand, and very-copyrighted Cornish pixie, for the bookstore party celebrating the release of the fifth Harry Potter book. The picture was taken before midnight, before I got my hands on my own copy of the book. I figured that since Miranda Goshawk (author of The Standard Book of Spells, grades one thru seven) would probably never appear in a Harry Potter film, I could say I was her and nobody would know the difference. It's anybody's guess how Ms. Goshawk got a Cornish pixie, or why she would want one, but it is chained by the ankle to a metal bit on her sleeve.
Did I say that I don't own the copyright on the pixie, and am not allowed to sell reproductions of it? (I hope the Warner Brothers lawyers were listening when I said that.)

(Pixie and Harry Potter merchandise ©Warner Brothers, image ©John O'Halloran, 2003, costume and pixie made by Kayta Barrows)