Flavored sugar crystals attached to a convenient stick.
Hard, sharp candy
Rock candy is probably the prettiest candy in the world, with a correspondingly horrible eating experience. The crystals kind of hurt your mouth and they dissolve really slowly. But who are we to dictate preferences to Abigail? (And the Dwarf, but they like weird stuff already and don’t really count.)
In fact, as far as I can tell the greatest appeal of rock candy is in making it. So go ahead, make it and then throw it straight out if you like.
But I’m being generous with canon this time. Any kind of hard, sharp candy will count… and if you do it right, any hard candy can become sharp. The champion hard, sharp candy is, of course, candy canes, which in some people’s hands violate the Geneva Conventions. It’ll also work with Jolly Ranchers, peppermints, and Werther’s.
And if you have the time and desire, go ahead and make some purple rock candy. It’s your mouth and you can destroy it with sugar blades if you want to.