Have you ever come across a person and saw that they had money and even wondered like in the famous Spongebob episode when the old lady said "What are they selling?
First off I wouldn't look at what are they selling but I would dip into how you personally can offer a person or community something of value.
Once you figure that out you either get your own product together or you can become an affiliate for someone who has a product that matches your audience
There are several ways to sell your product locally. You can start by creating a website or online store to showcase your product and reach potential customers.
A great method that has worked for me is I have made several small QR codes and I place them around relevant areas where possible buyers may be.
People are curious and surprisingly a good amount will use the code just to have a look. If you attach a cookie to the link then you can get commissions if they decide to buy.
