A 3D printable set of parts that converts a cardboard shipping carton into a pinhole camera, with a cell phone mount to record / view the image that is projected.  Sample image from earlier experimental test included.

Native OnShape CAD is here.  I designed the phone mount for a Pixel 6 Pro, but because I am including the OnShape CAD, I am hoping that others can remix / tweak the mount for their cell phones easier.

Please check out my other Youtube videos while you are at it, like and subscribe and help me get the word out.  Thanks! :-)
 

-=- Terence