2 Pack Large Foam Balls for Crafts, 6 Inch Solid Polystyrene Spheres for Party Decorations, School Supplies, DIY Projects, Modeling, Ornaments (White) - Walmart.com
Polystyrene Balls - Crafty Arts
Polystyrene balls and spheres UK. Styrofoam balls also available.
Polystyrene balls assorted small – Fun Creations
Polystyrene Beads - Everything You Need To Know - Eccleston & Hart
Polystyrene Balls | Various Sizes
Polystyrene Balls - Dala - Crafty Arts
Polystyrene balls and spheres UK. Styrofoam balls also available.