OO Pong - need help designing

Hi,
Not exactly. Scenario is like this.

You have a base class Toy which needs to be extended towards 2 [or more later] other classes.
You have 2 [or more later] classes with those class specific implementations. But these classses should keep the parent behaviours.

So design should be some thing like this. I used abstract class for that parent, as we have the flexibility of default implementation in side it.
public interface IToy
    {

    }
    public interface IBall
    {
    }
    public interface IPaddle
    {
    }
    public abstract class Toy : IToy
    {
         //Define default draw logic.
    }
    public class Ball : Toy, IBall
    {
    }
    public class Paddle : Toy, IPaddle
    {
    }