Stashed in: xkcd!, Comics!
Comic is by Kate Beaton: http://www.harkavagrant.com/
I guess you could use one of these for $15:
Or one of these:
Or create your own:
I must not fear. Fear is the mind killer.
Signs You're Addicted to Reading, by Popsugar
MC Escher Architect Comic
Ever Wish Calvin and Hobbes Creator Bill Watterson Return to the Comics? Well, He Just Did Thanks to Stephan Pastis of Pearls Before Swine.