Illustrate a scene where a pen is being used to stir a cup of coffee. The pen should be depicted partially submerged in the coffee, with its tip serving as the stirring instrument. Show the motion of the pen as it swirls through the coffee, creating ripples on the surface. Pay attention to the details of both the pen and the coffee, including texture, color, and shading, to create a realistic and engaging scene. Consider adding steam rising from the coffee to enhance the atmosphere. This artwork should capture the simple yet comforting act of mixing coffee with a pen, inviting viewers to appreciate the beauty in everyday moments.