Check out the display window at Mario's on SW Broadway PDX to see Jennifer Mercedes' wonderful graffiti.
I highly recommend Lynda Barry's new book, What It Is, about creativity, image making and imagination. Her activities and questions at the end of the book keep images flowing and the creative spirit moving. Plus it's a visual treat.
This month, Scientific American Reports has a special edition on preception- 105 Mind-Bending Illusions and what they reveal about the brain with many thought provoking artilces.