Victor, would your Toronto school be interested in a 4x5 pinhole camera made by Noon? Heres the blurb on RetroPhotographics website....

Noon Pinhole 5x4 The Noon Pinhole cameras are handmade in Poland from Jatobá (Hymenaea courbaril), also known as Brazilian cherry, a tree common to the Caribbean, Central, and South America and Brazil. Fitted with a 0.3mm laser drilled pinhole individually microscopically examined for roundness, the focal length is 50mm corresponding to a f number of about f/152. Image capture angle is 116 degrees.

The camera accepts a standard Double Dark Slide in a rather unusually ingenious way: instead of a conventional slot, the DDS is placed in the back of the camera and held in position by a ribbed wooden dowel which slides down angled guides – push the dowel down firmly to hold the DDS against the light trap. Simple and effective.
I can send this to Bob also if your school would like it.