This sour, powdered candy in test tubes comes in a variety of themes, making it ideal for shops attached to museums, aquariums, zoos, and other themed recreation venues. Candy is packed in unbreakable, reusable genuine test tubes.
— In an October 2011 survey about bestselling food and candy, Mary Porter Green, owner of The Curiosity Zone in Ashburn, Va., told TDmonthly that "the various test tube candies from Squire Boone" sell well, though they don't usually sell food.

Available in a wide variety of flavors and vivid colors, Rock Crystal Candy is made of sugar crystalized onto a wooden stick. The crunchy candy sparkles like real rock crystal formations.
— John Blair, owner of Science Safari in Cary, N.C., told TDmonthly in a late Summer 2012 survey that Rock Candy was one of his bestselling edible treats.

Where to buy:
SOUTH

As seen on the Food Network, Kaboom Rocks are colorful and carbonated candy nuggets. Place them in your mouth and feel it “Kaboom!” as it pops and sizzles on your tongue, creating an unusual sensation. It comes in two bursting flavors in an authentic unbreakable and reusable test tube. Let the party in your mouth begin!