A clown, face made up with paint that couldn't stand up to my onslaught of tears for no reason I can now remember. The over-sized T-shirt with its technicolor magic-markered design was a masterpiece. (Thanks, Mom!)
A robot made from a large cardboard box, plastic batting helmet wrapped in aluminum foil, copious glow sticks. In case anybody couldn't tell what I was, I wrote on the box in big Sharpie letters, "I am a robot."
A traveling salesman, which involved drawing on a mustache with eyeliner and raiding my dad's supplies for a briefcase and one of his exceptionally wide ties. (Thanks, Dad!)
A group of friends and I dressed as the Marx Brothers: Groucho, Harpo, Zeppo, Chico.
A long-distance relationship. Girlfriend and I labeled ourselves as far-flung locations and wrapped ourselves together in phone-cord coils (back when phones had cords). Another time, feeling topical, we were bird flu. I wore a curly, yellow wig (not blond, yellow) and fashioned a jersey to approximate Larry Bird. She was a chimney.
A goriila -- because once I had a gorilla suit, this one was low-hanging fruit.
Whatever costume you might don, hope your Halloween is happy.