Designed for those times when you've just had a meal but can't sneak away to brush your teeth, the Rolly is a small rubber disc covered in 276 spiky bristles that promises to be as effective at cleaning your teeth as brushing, when chewed like a piece of gum.
Besides reaching into every nook and cranny of your mouth, and gently stimulating your gums while you chew it, the Rolly contains xylitol and fluoride which are claimed to fight plaque and strengthen tooth enamel. And using the small disc doesn't require toothpaste, a mirror, or even water to rinse your mouth out afterwards. When you're done, you just spit it into the garbage like a piece of gum.
The Rollys come in multi-packs for about a dollar a piece, making them a little too expensive to use for all your daily brushing needs. But in an emergency, they could be far more effective than the go-to toothpick or piece of gum. [Rolly via bookofjoe]