I think one of the funniest things in the world is when Charlie Brown tries to make a ghost costume for Halloween and comes out with a sheet full of holes. I don't know why, but I find it hilarious.
I also think it would be a great Halloween costume. I hope someone I know decides to take on this costume idea because it's probably one of the easiest costumes in the world to make. Take a cheap white sheet and cut holes in it. Or if you want to make it look cartoony, take a white sheet and paint black dots all over. Or glue/sew some felt dots on it. So many options.
Photo courtesy of a blog I found on the internet whose name I can't remember