Autumn Drink Markers (Pumpkin-Acorn-Oak-Maple-Chestnut-Elm). Help your guests keep track of their drinks with this festive fall assortment. Equipped with a suction cup backing, these ingenious markers easily adhere to most glasses, bottles or cups with smooth, clean surfaces. Attach them to the side or base of a glass to easily recognize your drink. They won't leave a sticky residue when removed. Dishwasher safe.