Arrow Through Head:
Take a hanger, straighten it out, and fit it so it can go under a hat with about nine inches sticking out straight and the left and right side of your head.
Put some cardboard around both sides and add some feathers and a fake arrow on the tip. Put a hat on and your ready!
If you want to have a stab in your chest, cut an oval out of cardboard, make half a fake knife, and glue it so it sticks out straight, and put it between the buttons on a blouse!
Thank to Jessica for the good idea!