Drug culture.
A term for a small (smaller than a pack of cards), wooden thing that has a place to put various smokables, as well as a one-hitter. The better ones have a positive lock on them so that your stuff doesn't fall out in your pocket. Easily concealed, very portable, secure, and has capacity for a about an 1/8 oz of whatever you like to smoke. Often has the words "Cigarette Eliminator" on the bottom, so you know that you are supposed to smoke tobacco out of it.
Available at nearly all head shops for about $20.