On a nice day, head out to your local farmers market, take in the smells and sights, and dig in!
Waiting for an ex coworker last week in front of the Ferry Building, I had time to take advantage of the Ferry Plaza Farmers Market. I was greeted with free kettle corn, pomegranate, several kinds of citrus, humus AND almond and chocolate brittle. All this before lunch!
Seriously, it's a frikkin' goldmine. I highly recommend this activity as a totally socially acceptable way to get a free snack, or, dare I say, a free lunch.