Menuki are decorative ornaments found on the hilt of a Japanese sword, specifically on the tsuka (handle). Traditionally made from materials like gold, silver, or copper, they serve both aesthetic and functional purposes, providing grip and enhancing the sword's beauty. These ornaments often depict themes from nature, mythology, or historical events, reflecting the craftsmanship of the samurai culture. Menuki are not only valued for their artistry but also for their role in the overall balance and handling of the sword, making them an essential part of the katana design.