If you are wanting to do it as a commercial venture, then livestock (particularly beef if you are in the US) is about the only way to go unless you can purchase vast tracts of land and the equipment to run it.
If you are considering vegetable farming commercially, don't unless it is an extremely boutique product like truffles or exotic mushrooms, the economies of scales are crushing. The other option that is still viable is small plot that produces and end product. e.g you own a vineyard but you are not selling grapes you are selling wine. You own a pepper farm but your end product is hot sauce. Those are still viable for small plot.
The best thing you can do with a decent tract of land is to plant it full of expensive hardwoods such as black walnut and occasionally prune the trees to promote straight growth for lumber.
I have 7 acres and I planted 4 of it with African Ebony, one of the most expensive woods in the world. They are not native to my area so there is no issue with harvesting them and they require little in the way of care. They will provide a nice cushion for my children when they mature given that a single tree is worth between $300,000 to $1,000,000 (at current market) depending on size and quality of lumber. I planted about 50 trees per acre. The math is pretty self evident and it is the best use of land agriculturally if you are looking to maximize profit via small plot agriculture.
My wife uses some of the other land for personal farming but that is her gig, I grew up on a farm (citrus) and after NAFTA swore I would never scratch a living out of dirt again. I told her she was on her own with the vegetable farming other than helping her with where to plot certain vegetables and when to plant them.