Amazon.com : AKOLAFE 30 Pack 10x8 Inch Foam Boards, 5 mm Thick Foam Core Board 1/5 Inch White Foam Sheet, White Polystyrene Poster Board Signboard for Presentations, School, Office & Art Projects : Office Products
Polystyrene Foam Board Blue Small-Long (Approx 12''x4''x2) - MICA Store
Amazon.com: AMZQNART Craft Foam Blocks, 2 in Thick 17x11" EPS Polystyrene Rectangle Foam Blocks Packs of 3 Pcs for Art Sculpting, Sculpture, Modeling, School and Home DIY. : Arts, Crafts & Sewing
Plastruct Polystyrene Foam | The Ink Stone
1.5 lb Carving Polystyrene - Sheet Size 32" X 48" | Foam n More & Upholstery
1 Inch Thick Foam Board Sheets - 6 Pack 17x11 Inch Polystyrene Rectangles for DIY Crafts, Insulation, Sculptures, Models (White) - Walmart.com
3/4 in. x 1.25 ft. x 4 ft. R-2.65 Polystyrene Panel Insulation Sheathing (6-Pack) 150705 - The Home Depot