Large sheet of Styrofoam, also known as expanded polystyrene (EPS) foam.
Styrofoam is a lightweight, rigid, and highly insulated material commonly used for various purposes:
Insulation: Its excellent thermal resistance makes it ideal for packaging temperature-sensitive items, insulation in construction, and coolers.
Packaging: It protects fragile items during shipping due to its shock-absorbing properties.
Crafts and DIY Projects: Its ease of cutting and shaping makes it popular for craft projects, model making, and even creating planters or sound boxes.