Abstract ideas, broken down by subject, for those of you who feel the need to specialize.

Note that I'm not going to tell you how to pull any of these off, just that they would be incredibly unique if you decided to try to pull them off. And depending the crowd in when you're showing your costume off, you could be incredibly cool or incredibly nerdy.

Also, the obligatory female 'sexy' version of any of these is too disturbing to comprehend.