White Styrofoam/polystyrene/eps Foam Block 12 X 14 X 22 - Etsy
Plastruct Polystyrene Foam | The Ink Stone
Juvale | Designed for Modern Living
Foam Polystyrene Sheets (W54680)
Amazon.com: Silverlake Craft Foam Block - 3 Pack of 11x17x2 EPS Polystyrene Blocks for Crafting, Modeling, Art Projects and Floral Arrangements - Sculpting Sheets for DIY School & Home Art Projects :
Poly Styrene Foam Peanuts 14 Cubic Feet
3/16" White Styrene Board Pre-Cut Sizes
1" x 48" x 96" EPS Foam Sheet - Subotnick Packaging