1 Inch Thick Foam Board Sheets - 6 Pack 17x11 Inch Polystyrene Rectangles for DIY Crafts, Insulation, Sculptures, Models (White) | Foam crafts, Diy arts and crafts, Arts and crafts supplies
1-in x 4-ft x 8-ft Expanded Polystyrene Board Insulation in the Board Insulation department at Lowes.com
Styrofoam Sheets (12 inches X 12 inches X 1/4 inch Thick) - 8-Pack | eBay