David Graeber goes into this a lot in "Bullshit Jobs". Farming will keep you very busy (as a few people have pointed out), but it's mostly caring for projects

David Graeber goes into this a lot in "Bullshit Jobs". Farming will keep you very busy (as a few people have pointed out), but it's mostly caring for projects you personally own. As the title of the book suggests, Graeber is more concerned with why people don't seem to be content in hourly jobs, but he's an anthropologist not an economist so he says a lot about historical work too.