What can a camera be?

For a while now I have been looking at the idea of what a camera can actually be and taking the camera  to its bare minimum.  Making a camera out of photographic paper itself is a way in which you can reduce the camera to its bare minimum.  The photo paper forms the camera structure and produces the photograph and eventually becomes the photograph itself.  I have made a few small versions where I have created a box like shape and created a hole in the photographic paper with a pin.  However, non of these versions were very successful.  I think that the pinhole will have to made from aluminium tin and then removed once the photograph is developed.  This would focus light more precisely into the camera and would hopefully form on image.  Another, problem is stopping light from getting into the camera from other places, like the joins.  To stop this it is essential to keep the paper camera in a black dark until exposure and then still have the main body covered.  This is an issue I am going to have to experiment with during the process of making my photo paper cameras. 

The images above show experiments for making the structure of a camera out of photographic paper.