Whether you're a crafty kid or a professional calligrapher, this set of 5 SAI watercolor brush pens from Akashiya is a must. These brush pens are water-soluble and self-contained, ready to use as soon as you remove the cap. Use them with a water brush to create gradients, or just add water to create lighter shades. You can even combine them with other colors to make new hues as you would with traditional watercolors.