Love these

These acrylic paint pens by POSO are great for projects because they write and color on anything. Very easy to use. You can use these to paint rocks, shells, pinecones, wood, ceramic and other items/crafts. I used them for my adult coloring books. They dry quickly, can be used on almost any surface, are water-soluble wet, archival when dry, and have almost no odor. The set does contain 12 bright and bold colors. Before you use these just shake the paint pen a few times to prime it Then press down easily on the marker til the paint comes down.