The term 'Sock Fillers' refers to the material used to fill the toes of socks. Common materials used for this purpose include cotton, wool, and synthetic fibers. These materials provide cushioning and insulation, helping to keep feet warm and comfortable. Additionally, they can help reduce friction and prevent blisters. The crossword solution for this term is 'TOES', which is an appropriate answer as it accurately describes the area of the sock that is filled.