I've got to be quick here, and I know I'm missing some of the ones that readers have pointed out to me today, but here's what I've found:
Bo-Nanas by John Kovaleski
Candorville by Darrin Bell
Pearls Before Swine by Stephan Pastis
To my fellow Americans, happy Independence Day. Now I've got to go buy some canned beans and crawl into my neighbor's fall-out shelter.