I had a homemade cereal killer Halloween costume idea. I made it all with things I have at home. I took a pair of old cloths and glued small cereal boxes to the shirt with knives coming out of them with the fake blood coming out and splattered over it. I had blood splattered over my pants also.
I took a head band and glued a fake ax to it and put it on my head and ratted my hair and put leaves in my hair also. I put makeup on my face to add a little more character them finished it off with a little of blood across my face.