My pen and ink watercolor class is a total delight. The group is small, the teacher inspires me, and (bonus) it's an easy bike ride to the Park Blvd studio. I tried a Eucalyptus branch first. Next week we're going to sit in a University Heights coffee shop to sketch what we see.
I hear there's an urban "Sketch Crawl" that meets up every week here in San Diego, based on the work of Danny Gregory - I'm putting it on my list of new things to try this Spring.