Han Solo and Princess Leia Stacking Mug Set Mugs Sci-Fi Combine two of their favorites&mdash;java and Star Wars&trade;&mdash;in this practical yet unique gift set. Princess Leia&trade; and Han Solo&trade; each are featured on one of the ceramic, stacking mugs&mdash;perfect for any fan of the Force. Set of 2. On Princess Leia mug: I LOVE YOU On Han Solo mug: I KNOW Ceramic.