Somewhere in between a toothbrush + mouthwash + toothpick is the Wisps by Colgate. Meant for absolute emergencies or a quick teeth cleaning for when actual brushing is not ideal or necessary like in many travel situations; backpacking, train, flight, bus or even night out. Basically a mini toothbrush with a bead of special toothpaste built-in to the brush head ready to use on a whim. What's great is that you don't need water to use. Somewhat reusable and the end piece serves as a soft toothpick.