foam square blocks for crafts (2 x 2 x 2 in, 36 pack) genie crafts use this set of 36 block foam for crafts, modeling, science projects, or party decorations. the smooth polystyrene foam allows you to easily customize using stencils, paint, twine, and ribbon, your mind is the only limitation! create one of a kind party decor, floral centerpieces, or signs for an upcoming holiday party or birthday celebration. each foam square has a diameter of approximately 2 x 2 x 2 inches and can easily be cut to your desired size or shape.