I know Doorgunner has done something...I helped remove his from his trailer. Not sure what he put back in.
Here are a couple of things others did. These are more along the lines of building a dinette. Others have put upholstered chairs, etc in.
Fitting through the door will be the main problem if you go that route.
Good luck,
Dave
Gaucho
Here is one that Pizzachop did.
http://www.airforums.com/photos/show...imageuser=4331