I seem to remember a pinhole cam photographer (whose name is not clear now) who were using pinhole cams made out of empty matchboxes...

I and a close friend had once tried our chance to build a pinhole cam, and had succeeded fairly well...
...But, ours was exposing right on 18x24 cm print papers, and to see to positive photo, we were contact printing the exposed one on an other paper under strong enlarger light for long duration.

One thing I remember is that the perspective, esp. in close-ups, differs quite a bit from shooting the same pic through optical cameras...

Have great fun Slynky... :-) (BTW, I really do not have a positive idea about demolishing an intact camera, esp. a Yashica, even though it's not a SLR...)