(((((((((((((Artemis))))))))))))))) there are people on certain boards offering to give/trade some extras that they have not signed though. I can't remember where I saw that but if your interested I'll keep my eyes open.
Hey Artemis I did find this it's a printable version of the poster if that helps
Curtesy of
MRDINI from fireflyfans.net says "
Knock yourself out 
(150dpi in there, if you click on the image)"
http://mrdini.com/gallery/Firefly/serenityposter
I'll keep looking if I find anything else I'll post it here for you
