1. Paws and claws: search 'furries' on google... minus the fetish.
2. Stereotype: come as an obvious stereotype, it can be anything from a trend, music genre, ethnicity, occupation... whatever you want! as long as its obvious.
3. Arthouse: come as a piece of art, artist, art film... or a paintbrush.
4. 80s: i think this speaks for itself.
5. Geeks & nerds: glasses, suspenders, brown shoes, red hair... you get the gist. can be a book geek, gaming geek, science geek, band geek, whatever. just no band camp repeats.