These chalk markers are designed to look bright and bold on dozens of surfaces including glass, plastic, metal, ceramic and (of course) chalkboards! At work, use the chalk markers to create eye-catching signs, colorful menu boards and dazzling window displays. At home, use them to decorate wine glasses at a party, write a reminder on the mirror, keep track of your grocery list on the refrigerator or get organized by using them to label storage containers.