Menuki are decorative ornaments found on the hilt of a katana, a traditional Japanese sword. They are typically made from materials like gold, silver, or copper and are designed to enhance the sword's aesthetic appeal while providing a better grip for the user. These small, often intricate pieces can depict various themes, such as nature, mythology, or historical figures. Menuki not only serve a decorative purpose but also reflect the craftsmanship and artistry of the swordsmith, making each katana unique and culturally significant.