NOS is sustainable tableware made from 100% natural materials, such as walnut shells, rosin, and carnauba powder. When the hard outer walnut shell is separated from the inner shell, the function of the outer shell is lost. Hard walnut shells cannot be disposed of as food waste. However, the shell is durable and possesses similar characteristics to wood. NOS proposes a new CMF with different colors, patterns, and light transmittance by crushing walnut shells into various sizes and binding them with rosin to create a 100% eco-friendly material.