It’s fascinating to think about the number of PUs (procedural units) it takes to make a modern tool. Something as simple as a modern hammer must number in the thousands and a mobile phone in the millions or billions.
You might find the essay "I, Pencil" by Leonard Read interesting. It's told from the point of view of a pencil who talks about the complexity of his own creation and all of the components involved in the process
That essay also loosely inspired the opening scene of Lord of War, which showcases the journey of a bullet from an underground mine to an Eastern European factory all the way into the head of an African child soldier.
Loved that scene. Reminds me of all the "autobiography" stories we had to write for various items such as cars, horses, computers and pens, back in school.