I keep a couple of these in my drawer at work for long days when I feel like my breath is kickin like a newborn baby:http://www.amazon.com/Colgate-Wisp-Portable-Spearmint-Brush/dp/B001VLWJJ2They're good for an "emergency" but that's it.
These have tons of uses, actually. Sometimes watermelon carving goes too quickly.http://www.youtube.com/watch?v=4VWcHqyce1M