How do you paint Styrofoam? Have you tried and ended up with a lunar landscape look? It's a great look if you're painting a solar system with Styrofoam balls but not really beyond that!
There is a real knack to painting any styrofoam or polystyrene craft shape, whilst making sure you get complete coverage. In fact, there are two knacks but they are both simple knacks - honest!
Obviously the paint is often just the base of the craft embellishment but it is, nonetheless, an important base and is often still very visible when the project is completed.
Styrofoam is essentially just a brand name for polystyrene. Crafters use it to make hanging decorations, table decorations, decorations on sticks, hanging solar systems, decorated Easter eggs and many, many more craft projects.
Styrofoam is available in preformed shapes (stars, cones, animals etc) and also both balls and eggs. Don't be limited by perceived uses of shapes. For example, a polystyrene egg shape is not only for Easter, it could be a penguin, a robin, a teddy bear body, a spaceship etc.