Ice cube trays are small containers designed to freeze water into cubes or other shapes. Typically made from plastic or silicone, they have individual compartments that hold liquid. Once filled, the trays are placed in a freezer, where the water solidifies into ice. These trays come in various sizes and designs, allowing users to create different shapes, such as spheres or stars. Some trays even have lids to prevent spills and keep the ice clean. Ice cubes are commonly used in beverages, helping to chill drinks quickly and add a refreshing touch.