You still see a lot of inmates in modern prisons doing art projects like that to pass the time and keep their sanity, especially in mximum security prisons. I used to have one on my old company who was writing a novel, and theres another in one of the dorms I work now who is a very talented painter. Spends all his time either sleeping, reading, or painting, with time out for meals.
Its amazing what some people can do to keep themselves from going bananas.