"time warp" dance

[silvertigre.livejournal.com]

Next week I'm going to a 4 day conference and one of the events is a "time warp" dance. I'm supposed to dress from any time period except modern. I don't want to go all out... I don't want to have big hair and and really fancy getup like from the 50's or something. I'd really love to do a future thing and dress Trinity-esque in a black shiny fake leather outfit, but I don't want to spend a lot of money. Any thoughts on what I could do? If not Trinity-style, what other time period would be easy to do, possibly to find cheap clothing somewhere or to alter my own clothes?