Well, I think I know what I am wearing for the Halloween party that I've been invited to. Kilt plus wand and some sort of wizard robes = Aberforth Dumbledore. The hair and beard I have, although I don't have quite as much grey as the actor who played him in the final part (not his real hair though, I imagine).

Hmm ... now where could I find a cuddly stuffed goat?