Polystyrene eggs. Ideal for decoupage, sequin art, craft and painting Polystyrene ornaments for decorations. Smooth for painting easier. For these Easter eggs, you can not only use it as Easter egg ornaments, you can also use it as a kind of DIY supply and spray your imagination to creative them. Ideal for Easter decor, encouraging kids' imagination and invention, ongoing new and different artistic ideas. Every egg will be special and unique.