"I built a couple of pinhole cameras with my daughter as a small project and let her choose the subjects. Some pictures turned out well, others not so (overexposed). She especially liked this one."
"It was a simple cardboard box. Painted black on the inside. And using black gaffer tape to seal it. The pinhole I made out of a beer can with a needle. Measured it by eye with a loupe and used an online pinhole calculator to find out the f-value. Then used an app to calculate the exposure time."