Suction cup hooks are a great way to hang a variety of items without the need to drill any holes. The majority of suction cups are made from plastic and the hooks are made from the same or from metal. They grip to a number of different materials such as tiles, glass, ceramics, metals, plastics and other shiny surfaces. The best surfaces are those that are smooth and non-porous. They come in a variety of sizes depending upon your needs and can be used in a variety of places within the workplace or home.