using System;

    using System.Collections.Generic;

    public class Program

    {

        public static void Main()

        {       

            var myItems = new MyItems();

            myItems.Add(new MyItem("Hello"));

            myItems.Add(new MyItem(" "));

            myItems.Add(new MyItem("World"));

            myItems.Add(new MyItem("!"));

            foreach(var item in myItems)

                Console.Write(item.Name);

        }

    }

    public class MyItems : List<MyItem>

    {

    }

    public class MyItem

    {

        public MyItem(string name)

        {

            Name = name;

        }

        public string Name { get; private set; }

    }

​