First off, glad to see the farming cross post or I wouldn't have seen this comm so I could sub!
We don't do much fruit right now, but I'm hoping to change that next year. My favorite not-a-fruit-thats-easy would probably be carrots or lettuce.
From previous efforts, I'd probably say strawberries. We had moved, so haven't done strawberries in a few years, but hoping to get some property for us to live/farm over the next year and strawberries will definitely be on the list for us.
Edit: We do a community garden right now, the lack of fruit is due to some of the rules of the garden.
There already are, I'm not really worried about them in specific, and we know a good few farmers through my wife.
I'm just not growing them myself currently :)
Edit: The nearby plantings done by a neighbor who has since moved set up apple trees, blueberries, strawberries, raspberries, and blackberries. He had been in the area for about 20 years, so he has done basic tending and let them thrive over the years.
At this point they are basically a staple in the community