These versatile polystyrene foam balls are perfect for school projects, floral arrangements, science projects, weddings, part of DIY centerpieces and much more. Wrap them with ribbons and fabric, or embellish them with jewels, buttons, florals, beads and more as a quick and easy DIY decoration. When polystyrene foam balls are needed for craft use, these smooth, lightweight and round polystyrene foam balls will do the trick!