Clone

public static IList<T> Clone<T>(this IList<T> listToClone) where T:ICloneable {
    return listToClone.Select(item => (T)item.Clone()).ToList();
}

public class Item :ICloneable {
        public int ID { get; set; }
        public string ItemName { get; set; }
        public object Clone() {
            return MemberwiseClone();
        }
    }

static class CloneTest {
        public static IList<T> Clone<T>(this IList<T> listToClone) where T:ICloneable {
            return listToClone.Select(item => (T)item.Clone()).ToList();
        }

        public static void  RunTest(){
            //Populate our initial list
            var items = new List<Item> {new Item {ID = 1, ItemName = "Item1"}, 
                                        new Item {ID = 2, ItemName = "Item2"},
                                        new Item {ID = 3, ItemName = "Item3"},
                                        new Item {ID = 4, ItemName = "Item4"}};
            //Create a Clone
            var itemsClone = items.Clone();

            //Baseline test, expect Match comparing 2nd item in list
            Console.WriteLine(items[2] == items[2] ? "Match" : "Different");

            //Clone test, expect Different comparing 2nd item of each
            Console.WriteLine(items[2] == itemsClone[2] ? "Match" : "Different");
        }
    }

static void Main() {
            CloneTest.RunTest();
            Console.ReadLine();
            return;
}


RESULTS:
Match
Different