I am working on building my own camera. For the first part I made a simple lens design and crafted the lenses out of acrylic glass. My lens is a rough 100mm lens with 3 elements and I used a 3d printer to make a tube which holds those lenses together. The lens is mounted to a box which has an acrylic glass panel in the back where the image is projected on (I sanded the panel on the projection side and it works great!).
Now I would love to capture some sort of image on film but I want to make my own film. Please don't get me wrong - I know I cant make some "real" film- I am just looking for some solution to capture SOMETHING. Maybe I can paint a thin sheet of wood such that the image gets "burned" in after thirty minutes or so. I can remember that someone suggested me to use beetroot juice as a light sensitive paint but I prefer to ask before I'll try that.
The "film" then would be scanned and most likely converted to black and white. I'm just looking for a solution to be like "hey that was produced by me" and not "see how good my own camera performs". Do you have any hints? Also be aware that I'm not into chemistry at all. I would prefer some household stuff over chemistry I would have to order.