Costuming ideas
R.S.V.P. here
These costumes can be created easily with items at thrift stores, costume shops, or even things you already have. Here are a few ideas to get you started.
The Wizard of OZ
The Wicked Witch of the West or East or in "Tin Man" Dorothy herself is dead along with several others.
Buffy the Vampire Slayer -
Buffy. (she died twice), Tara, Anya, Jonathan, Adam, Mrs. Summers, or Any of the vampyres including- Angel, Spike, Drusilla, and many more.
Monty Python-
T.V. Series- The parot from the Dead Parot Sketch or many other charactors blown up in "How not to be seen".

The Holy Grail- The Green Knight, Sir Bors, The Animator, The Bridge Keeper, Soothsayer, Sir Lancelot, Sir Robin, Sir Galahad, the newscaster, the rabbit, and others.

The Life of Brian- Brian or The Priest

Romeo or Juliet -
From the book or any of the movies including the 1996 version with Leonardo Dicaprio
Star Trek -
Dr. Spock, or any secondary character that beamed down with Captain Kirk.
Real People-
Winston Churchill, Thomas Edison, Mahatma Ghandhi, Jim Henson, Grace Kelly, John F. Kennedy, Martin Luthur King Jr., Marilyn Monroe, Pope John XXIII, Elvis Presley, Franklin D. Roosevelt, Babe Ruth, Joseph Stalin, Igor Stravinsky, Rudolph Valentino, Ceasar, King Tut, Abbot and Costello, John Belushi (a blues brother),
Don't forget about the good old undead Halloween costumes such as a Warewolf, Vampyre, Mummy, etc.
From Harry Potter-
James Potter, Lily Potter, 'Moaning' Myrtle, Nearly Headless Nick, Sirius Black, Albus Dumbledore , Severus Snape, Fred Weasley, and many more.