Fuel Cell Foam 2 Gallon Cube 8" x 8" x 8" - Pyrotect
Amazon.com: Juvale 6 Pack Foam Cube Squares for Crafts - Polystyrene Blocks for DIY, Floral Arrangements, Arts Supplies (4 x 4 x 4 in, White) : Arts, Crafts & Sewing
Bright Creations 36 Pack Foam Cubes And Square Blocks For Crafts, School Projects, Sculpture, Modeling, 2 X 2 X 2 In" : Target
Crafts Foam Cubes, Blocks for Models, Art, DIY Projects (3 in, 30 Pack – BrightCreationsOfficial