Each month through ellenmilliongraphics.com there is a sketchfest. Artsists from all across the globe get together for a 24 hour sketch session where they sketch out their ideas to prompts that are posted by other artists or anyone in general! I've started participating in this - it's a total blast and completely addictive! I now have a gallery of sketches for all of the sketchfest's I've participate in so far. You can check out my work HERE