What is the different materials use in making an emery bag and pin cushion?

An emery bag is typically made from durable fabric, such as cotton or canvas, filled with emery powder, which is a gritty abrasive material used for sharpening needles. In contrast, a pin cushion is usually crafted from softer fabrics like cotton or felt and filled with materials like polyester stuffing, sawdust, or crushed walnut shells to provide a cushioned surface for holding pins and needles securely. While both items serve functional purposes in sewing, their materials reflect their specific uses and durability requirements.