LordSiravant

Since I play as a farmer who specializes in rare and exotic goods, my farm on Ginger Island is completely dedicated to Ancient Fruits, while inside my fully-upgraded house are dozens of planter pots filled with Sweet Gem Berries. I was extremely lucky in that I gained both an Ancient Seed and a Dinosaur Egg within the first week of my latest playthrough, so my farm also sells Dinosaur Mayonnaise, and naturally I also sell Truffles dug up by a pig. Ancient Fruit Wine and Jelly are also lucrative exports that churn away in dozens of kegs and barrels. And in one of my Big Sheds, dozens of Crystalariums churn out rare gems like Diamonds on a regular basis. I spend a lot of time fishing and smoking Super Cucumbers during the months they're active as well. Lastly, a row of Mystic Trees give me Mystic Syrup every week. Between all these rare and unique goods, I make hundreds of thousands of gold at the end of every month, and my farm thus has a reputation for unique products that can't be found anywhere else. (Probably helps that your character is favored by nature spirits and other magical beings in a world in which they're otherwise in decline)