I saw this and had to share.. http://tinyhouselistings.com/tiny-house-parking/index.php?s=viewmore
If you have some land, rent it out to a person with a tiny house!
How awesome would it be to go on AirBnB with a backyard tiny house and rent that out instead of your spare bedroom? I would 100% rent somebody's tiny house in their backyard on a trip.
I know a couple who owns a mobile home park, and they make LOADS of money from that place. I think they allow people to bring their own trailers, and they also buy up repo trailers and rent them as a package deal. You can buy a basic trailer for "take up payments". It causes them some headaches, of course. I mean, you don't get wonderful tenants for the location /prices of their place, but they're making money hand over fist.
If you live in a suburb, of course, this probably isn't possible: If you're in a suburb, you're probably zoned for single family dwellings only.
How about gardeners who might want to plant an orchard?
This is working pretty well for me. Of course, it's farmland, not an orchard, but it brings in a decent amount of money each year. There is some work involved: You must be registered with the county, have a Farm ID#, and jump through some hoops each year.