hi ross

a camera is just a dark space ... that's it.
i can see his home made cameras making images
on film or paper as negatives ...
a friend of mine made a pinhole camera out of his thanksgiving turkey one year
i don't think these cameras will make it to goodwill either
http://www.boyofblue.com/cameras.html

something made of paper or tin cans or cardboard doesn't seem too far fetched