Styrofoam® Balls Multipack. Wrap these 1.5" Styrofoam balls with ribbon felt or fabric. Embellish them with beads, buttons and botanicals. Foam balls can even be painted. Great for crafts, floral arrangements, school projects and many other applications. Create a magnificent garland by spray-painting these balls various colors, and string them on fish line. These balls measure 1.5” wide , and come in packs of 12 .