Don’t know if this of any interest for the museum, but at the German film studios in Babelsberg, there is a full scale mock-up EC135 sitting rather unloved. It was used in the German TV-Series Helicops 15years ago. Might be something neat until a real one can be found?
http://helikopterhysteriezwo.blogspot.be/2014/03/the-movies-and-tv-27-helicops.html