i made cardboard film-frames for my friends who were called to the colors (=recruited to the IDF)
it says: "Do not get involved. don't take a part and don't be an actor. Be the Photographer."
the frame lets the newly-recruited look at very weird situations, without being hurt somehow. if it's through a film frame, thus it's a movie - everything is possible..
it has a camouflage strap - so the recruited can tie it to army pants for easy and quick draw.
caution! the film-frame does not work in emergency situations, such as being under fire!