She Blogged By Night has a great post about the history of the Mike Myers mask from Halloween, A Very Brief History of a Very Famous Mask. I like these pics, in particular. Happy Halloween!
Witches Fashion 1938Nail Gloss Witch 1941Glamour Witch 1947 -Ann SavageWitches Glamour 1951 – June Haver
You could either make a copy of the Handbook for the Recently Deceased or buy one and dress up as any dead person.
Some Beetlejuice costume inspiration: