Take a look at this website:
https://www.etsy.com/
With the above as inspiration, think of cottage industries. There is so much that you can sell from a stand or "retail building" or artist studio. You can make it yourself, buy and then resell it or more creatively, sell it on commission. Maybe you could even create a "farmers market" and rent out stands to local artist and farmer, to come and sell their wares and food, like gemstone, clothes, jewerly, furniture, 3D-printed things, solar dehydrators, there could also be a educational workshop area, and also food/drinks like water kefir, milk kefire, local cheese, honey still in the honey comb, cakes, trail-mix, etc.
Iterations are fine, we don't have to be perfect
My 2nd Location:Florida HardinessZone:10 AHS:10 GDD:8500 Rainfall:2in/mth winter, 8in/mth summer, Soil:Sand pH8 Flat