Since I am originally from a small village, and my parents are still living there, I wanna show you how we get our fresh vegetables delivered.
As my family had some unused fields, my parents decided to lease them to a family friend. Instead of paying money, he constantly provides us with fresh seasonal vegetables. The Supply Chain is very simple, and in fact only includes two parties. On the one hand that is our family friend Tom, who is producing the goods. He does not even buy the seeds for the vegetables, but instead uses them from last years harvest. Furthermore he delivers the products himself to my family. Therefore Tom is supplier, manufacturer and distributor at once. On the other hand there is my family that is consuming the goods, therefore being the end-customer.
That is probably one of the simplest examples of a supply chain, and is supposed to show that is does not necessarily need to be a complex thing.