Way back when I was a youngster my grandpa would come over and get me and take me to different places for work. The first was someone he knew that needed their lawn mowed. I mowed that yard for 2 summers and never once saw who lived there. When I was a little older he would take me to a farmers house and drop me off. Like some of the other comments on here, putting up hay is a very tough job, but one of the most rewarding. I had access to a rock quarry also back then. Here I would go, an old beat up truck, a bunch of sledge hammers, wedges, long pry bars, picks, and mattocks. If you take it to a rockyard where they have something to unload for you, you can load a pallet right in the bed of your truck. Depending on the rock you have a pallet back then would bring me anywhere from $50- $125. Not to bad for a teenager in the 80's. Not everyone had access to a rock quarry. Those folks would find a place in the woods and fill the bed of their truck with fieldstone. That was not only hard work but also more dangerous. You always had to be on the lookout for snakes, yellow jacket nests, and other critters. But it paid well. I went to highschool with a guy that started cleaning old people's gutters. After a few years he was so busy with that that he never got a "real job"! I believe he added on a few things like cleaning windows and pressure washing houses and driveways.