So what normally comes in a SketchBox?

Wonderful tools like Copic Markers, Koi Watercolors, Montana Acrylic Paint Markers, Alphacolor Pastels, Caran d'Ache Luminance Colored Pencils, Charcoals, Graphite Sticks, Gum Erasers, and other materials and mediums for you to explore. Each month has a theme and is meant to allow you to try a new medium. Past themes have included unique watercolor, illustration markers, ink, and colored pencils.

What doesn't come in a SketchBox?

3D mediums like clay, sculpey, or pottery supplies.