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Foam Balls Bulk – 10 Pack Large White Polystyrene Foam Ball for Arts and Crafts | eBay
10cm Florist Foam Balls Spheres for Craft
Juvale Foam Balls (100-Pack) - Arts and Crafts Supplies - Perfect for Party Decorations for Weddings, Christmas and more - White, 2,5 cm in Diameter : Amazon.co.uk: Home & Kitchen
4 Inch Foam Polystyrene Balls for Art & Crafts Projects (4 Piece Set) | eBay