AMERICAN CRAFTS-Pebbles: Duplicate Rub-Ons. Rub-ons are a fun and easy way to customize projects. They will adhere to most any surface including paper, ribbon, glass, wood, and more. These rub-ons are especially great for card makers because each package contains eight identical words or phrases. A variety of sentiments and colors are available, each sold separately. Burnishing stick is not included. Imported.