I've been watching episodes of Adventure Time with my daughters all week and it inspired me to draw a crystal pear. I created an array of radiating lines in pen, then created this Vine animation as I colored in the resulting triangles.
This video is a cool way to see a graffiti artist at work. The time lapse photography slides and pans around an abandoned factory as the artist Sofles sprays tag after tag in a frenzy of aerosol.