Road trip fail - kid got carsick on I-95

Had what we thought was gonna be a fun 6-hour drive from Boston to NYC yesterday. My 9yo gets carsick super easy and I KNEW this but forgot to pack ginger candies and the benadryl is at home. He threw up like 3 times and by the time we got to New Haven I just said screw it and we turned around. The whole thing felt like money burning in the gas tank. Anyone have actual solutions that work? The patches don't do anything for him.