I know a guy who RE and does a number of fun things for extra spending money.
In the spring, he grows hundreds (maybe thousands) of tomato and other vegetable plants from seed in his backyard greenhouse and sells them to a local retailer.
In the summer, he picks up a few one day a week jobs he thinks he would enjoy like fixing old lawn mowers, sharpening blades and worktools, and other handyman type activities.
In the fall, he makes and sells sausages, jars and sells vegetables from his own garden (more like a small farm), and even makes and sells his own wine (but only to people he knows, not the general public).
In the winter, he puts a plow on his truck and does some plowing, but generally takes it easy.
He uses this money to go on cruises, travel, and general entertainment.