These cheapo and quick costumes were designed with kids in mind, but there’s nothing to stop you from up-scaling these ideas to adult-sized. They come with schematics and instructions, too.
We like the “Cyber Power Princess” and the iPod player.
Our all-time favorite last-minute costume is to put a banana in your pocket. When people ask what you’re supposed to be, whip it out and say, “I’m happy to see you.”