Polystyrene Balls - Solid - ALL SIZES - choose from 20mm - 400mm | Craftmill
Large Foam Balls - Hollow White EPS Foam - up to 30" diameter
Mini Rainbow Polystyrene Balls - Baker Ross
Bright Creations 4 Pack Solid Foam Balls For Crafts, 5 Inch Round White Polystyrene Spheres For Diy Projects, Ornaments, School Modeling, Drawing : Target
Discount School Supply® Jumbo Soft Foam Balls - Set of 6
Soft Sponge Foam Ball 90mm - Set of 12 - Eveque
Amazon.com: 75-Pack Bulk Foam Balls for Crafts for DIY Arts and Supplies, 2 Inch, Small : Arts, Crafts & Sewing