Replying to Halloween costume?

so im going to this party on halloween, and the girl whos having it wants everyone to go in costume, but im totally blanking on what to do, i thought of skier or lacrosse player, but nothing overly creative (except my lacrosse team and i were tossing around the idea of willy wonka and a bunch of oompa loompas, which i guess is creative)

so this is my challenge to you ns:

come up with a good, funny or scary costume that is a) cheap, b) quick, and c) not overly dumb; it can be either a group thing or just one




winner gets + max K, i know its not much, but all i can give you