I have seen some nice pinhole photography. Mostly are black and white. The pinhole lens is actually not a lens but only a hole. There is no glass, no coating, no focusing ...
I have owned several EOS cameras. When they were gone, they left me the camera cap.
I used the camera cap to make a pin hole lens.
Step 1: Materials
1. A camera cap.
2. A tin foil - 1"x1" is enough
3. Some tape