Polystyrene is widely used in packaging due to its lightweight and protective qualities. It is commonly found in foam form as packing peanuts, food containers, and disposable cups. Its insulation properties make it a popular choice for thermal insulation in buildings and appliances. In the electronics industry, it is used for housing components and as a dielectric material in capacitors. Polystyrene is also utilized in the production of toys, model kits, and various consumer goods because of its ease of molding and durability. Additionally, it serves as a base material for many medical devices and laboratory equipment due to its transparency and sterility.