There is a YouTube channel or two about people building modern tools and equipment from scratch, beginning with building a fire source hot enough to extract metal from ore and on up from there.
From the old days of film:The best shots always happen after the last frame is exposed (or last byte is used up on the memory card.Other best shots were taken through the lens cap.Any remaining best shots were lost when someone opened the door to the dark room while you were developing the roll and let all the dark out.
There is a YouTube channel or two about people building modern tools and equipment from scratch, beginning with building a fire source hot enough to extract metal from ore and on up from there.