The theme at Fanime 2011 (at least in terms of the advertising artwork and also a cosplay gathering) is 'steam-punk'. I'll wear my Heihachi cosplay. I read an article where someone mentioned the steam-punkish feel to Samurai 7, so I think the cosplay will fit right in. I really need to work on the goggles, though, to replace the green lenses with orange ones. Plus the rice bowl did not last (went moldy) so I need to re-think that.
By the way, here's a link to the Instructables site. Someone post instructions for making this cool shutter (the creator called it an aperture):