know of a guy that refurbishes round balers or strips them down for parts. him and his two hired men 
spend four days a week in the shop during the off season working on them. 
They generally have a buyer lined up by the time they roll out the door. Fresh green or yellow paint and new stickers.

They both get Friday off with pay. He said it pays pretty good. I believe they all enjoy working together.

another guy a lot closer to me does the same thing with feeder wagons......is pretty much a full time business now.

young fellow, few years back was flipping square balers......but I think young ladies and night life
got him to pursue other avenues. :) 

would think a person could specialize in any type of equipment and demand would pound on your door.