If you're willing to invest, real estates is one good industry to start. Buying houses could be great, you could earn rental income but you have to maintain the home which could be a lot of work aside from the dangers of the housing bust.
On the other hand, buying land or agricultural land is a lot safer than the above. You could just let it sit and let time pass by until you property gains more value before selling it or you could use it yourself for your farming business.
Link: Nebraska Agricultural Land Values Climb (rural land); R
