Whats an amazing halloween costume idea?

want to be somethin different somethin and somthing funny but i plan to make this costume... i want to be something like a squid or a fandango bags...something different. and i will be wearing this to school events so it cant be in appropriate but something amazing and epic. do not say anything like justin beiber or lady gaga something amazing! and clever that no one else has though of there will be a billion justin beibers