A tray is a flat, shallow container used for carrying or holding items. It often has raised edges to prevent objects from sliding off. Trays can be made from various materials, including wood, plastic, metal, or glass, and come in different shapes and sizes to suit various purposes, such as serving food or organizing items. Trays are commonly used in households, restaurants, and offices. In restaurants, they help servers carry multiple dishes at once, while in offices, they can organize paperwork or supplies. Some trays are designed for specific uses, like breakfast trays with legs for serving meals in bed.