Posca paint markers are a super useful tool, and they get quite a workout at our shop! With a wide variety of brilliant, opaque, lightfast colors, they perform well on most surfaces, including glass, paper, cardboard, wood, and plastic. Because they are water-soluble, they will wash away, but it takes a little elbow grease. This paint is quick drying and made to last. We use these on our sidewalk signs, and they beautifully survive the elements and carry on looking top-notch.
They come in a variety of sizes, too!