As far as viable doctrines for the survival of the downright vagabond, art is one of the best. What I mean is that art can satisfy me even in the deepest of existential vacuums (a term used by Victor Frankl). Here are one or two of my favorite pieces by someone that calls them-self NegativeFeedback on Deviant art dot com. (The current background image (the guy imbued with maze patterns) is one of his works, probably my favorite).