1 inch Styrofoam Ball

Styrofoam balls are great for doing mass/density experiments or use them as part of an experiment to compare the effects of how the different ratios

Styrofoam Ball & EPS Foam Balls by Shape Innovation, Inc.

Juvale Mini 1 Inch Foam Balls for Arts and Crafts Supplies (100 Pack), PACK - Fred Meyer

Styrofoam Balls 1.5-Inch, Each – King Stationary Inc

Diy Polystyrene Styrofoam Foam Ball Styrofoam Decor Diy Foam Balls - Foam Balls - Aliexpress

Buy 1 Inch Styrofoam Ball Online In India - India

Poly Foam Ball DIY Projects, White, 1-piece - Israel

4 ct Foam Balls 4 Round White Polystyrene Styrene Forms Sphere

Physics Balls Group – Arbor Scientific

Styro Balls

LOMIMOS 300pcs 1 inch White Foam Balls Mini White Styrofoam Balls for Arts & Crafts DIY School Projects Making Supplies

Craft Foam Balls, 1-1/2 Inch, White, 12 Per Pack, 6 Packs