MT Products this foam is made of polystyrene foam molded from tiny beads into fun foam blocks. None squishy kind of white craft foam but lightweight.
MT Products 4 x 4 x 4 White Polystyrene Foam Block/Foam Cube - Pack of 6
Christoph Jakob Artist: Sculptures for sale - SINGULART
480 PIECE 8 inch GYMNASTIC FOAM PIT CUBES/BLOCKS
8X8X8In Foam Cube White
Star Trek By Any Other Name props RPF Costume and Prop Maker Community
1.5 x 48 x 96 Wall Panel White Egg Crate Sound Proof Acoustic Panel
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Star Trek By Any Other Name props RPF Costume and Prop Maker Community
Item Description, Make the most of this set of 4 foam squares for crafts, modeling, creating basket fillers, science projects, fall decor, or party
4 Pack Foam Cube Squares for Crafts - Polystyrene Blocks for DIY Projects, Models, Arts Supplies (6x6x6, White)