Paper trays are flat, shallow containers designed to hold and organize sheets of paper. They are commonly used in offices, schools, and homes to keep documents, letters, and other paperwork neatly arranged. Paper trays can be made from various materials, including plastic, metal, or cardboard, and often come in different sizes to accommodate standard paper formats like A4 or letter size. These trays can be stacked or placed side by side to maximize space and improve accessibility. Some paper trays feature compartments or dividers, allowing users to categorize documents by type or priority. They help reduce clutter and make it easier to find important papers when needed.