I was writing about before, but the makers of Magnetic Paint even improved their homepage and show some more infos about their highlight. Short about Magnetic Paint: Turn your Wall into a Magnetic Desktop. No Magic, but fun. With this product u can paint microscopic particles onto nearly any surface up.
Was someone interested to place a magnetic sticker to a place, he needed a steel surface or his refrigerator for that to choose. Now you only need Magnetic Paint on your wall and you are ready to stick. You can overpaint the simple gray with just any other color. Also, there are already plans to place complete furnitures on the wall with this technology.
Surprise your Kids to paint their room with this color and they will have a lot of fun, also you may have several other ideas what u can do with hat effect.