Free Workshops offer a great way to see new ideas and working methods.
Here is one example:

Karen showed up with her homemade cardboard camera all wrapped in black gaffers tape. The camera was ugggggly - utter garbage. In order to shoot a single shot the film holder / Polaroid holder had to be taped in place to prevent light leaks. The pinhole was a piece of tinfoil with a crude f128 hole (roughly)...

However, Karen did some great imagery with her camera.

Her is one shot:
(Please click on image link)