Mystery Object

The object is green, but it is also purple, yellow, red, blue, lime, brown, orange, and pink. All over this one of a kind creation there are sharp points and edges, but it is also smooth and flat. There are holes, bumps, indents, and pieces that have chipped off, yet it is also smooth, flat, and curved. The object gives off an aura of peacefulness but the area around it is noisy and bustling. Hardened sprinkled Cherios and shells of all kind of colors surround this mystery object. It is bigger then a phone but smaller then a desk drawer. What am I?