I raise bees and sell the honey. Good for a few thousand a year and the money makes up for the stings. I have a couple of dozen chickens and sell the eggs, but this makes very little money since eggs are so cheap in the super market. It pays for the feed and that's it. I wrote an Amazon book on how to play harmonica in the style of Sonny Boy Williamson II that sells steady and makes me beer money. I sell a couple of my Science Fiction short story collections on Amazon. "Error Message Eyes" and "Frogs in Aspic", but after a good first year they sell only a couple of copies a month. I sell four or five Science Fiction stories a year, but only occasionally do I get pro rates. It's nice to see your name in print, though.