diff --git a/src/hooked_containers/common.py b/src/hooked_containers/common.py
index c576311..cb5b8af 100644
--- a/src/hooked_containers/common.py
+++ b/src/hooked_containers/common.py
@@ -20,19 +20,17 @@ class HookedContainer(Generic[T], ABC):
     def __repr__(self):
         return f"{self.__class__.__name__}({self._data!r})"
 
-    def __iter__(self):
-        return iter(self._data)
+    # Sequence Methods
+    # __contains__, __iter__, __reversed__, index, and count
 
-    def __contains__(self, value):
-        return value in self._data
-
-    # MutableSequence Methods
+    @abstractmethod
+    def __getitem__(self, key): ...
 
     def __len__(self):
         return len(self._data)
 
-    @abstractmethod
-    def __getitem__(self, key): ...
+    # MutableSequence Methods
+    # append, reverse, extend, pop, remove, and __iadd__
 
     def __setitem__(self, s, value):
         self._data[s] = value
diff --git a/src/hooked_containers/sequence.py b/src/hooked_containers/sequence.py
index 8af5160..624bf5c 100644
--- a/src/hooked_containers/sequence.py
+++ b/src/hooked_containers/sequence.py
@@ -26,7 +26,7 @@ class HookedList(HookedContainer[T], MutableSequence[T]):
     def __getitem__(self, s):
         # print("Getting item:", s)
         match self._data[s]:
-            case MutableSequence() as seq:
+            case HookedContainer(_data=seq):
                 new_path = copy(self._path)
                 new_path.append(s)
                 # print(new_path)
diff --git a/src/hooked_containers/state.py b/src/hooked_containers/state.py
new file mode 100644
index 0000000..c44cc17
--- /dev/null
+++ b/src/hooked_containers/state.py
@@ -0,0 +1,22 @@
+from datetime import datetime
+
+from .mapping import HookedMapping
+
+
+class DomainState(HookedMapping[str]):
+    def __setitem__(self, key, value):
+        super().__setitem__(key, value)
+        super().__setitem__("last_changed", datetime.now())
+
+
+class NameSpaceState(HookedMapping[str]):
+    _data: DomainState
+
+    def __setitem__(self, key, value):
+        super().__setitem__(key, value)
+        # print("ns SetItem")
+
+    def __getitem__(self, key):
+        val = super().__getitem__(key)
+        # print("ns GetItem")
+        return DomainState(self.hook, existing=val, path=self._path + [key])