diff --git a/CoreThing.cpp b/CoreThing.cpp
index 26a8740..93a081b 100644
--- a/CoreThing.cpp
+++ b/CoreThing.cpp
@@ -1,5 +1,6 @@
 #include "CoreThing.h"
 
+#include "Participant.h"
 #include <iostream>
 
 CoreThing::CoreThing(unsigned char networkId, unsigned char thingType) {
@@ -8,6 +9,7 @@ CoreThing::CoreThing(unsigned char networkId, unsigned char thingType) {
   this->Init();
 
   int thingId = CoreThing::Add(this);
+
   if (thingId < 0) {
     std::cout << "ERROR: Thing store is full\n";
     this->id = 0; // what to do when we cannot store any more things?
@@ -15,15 +17,17 @@ CoreThing::CoreThing(unsigned char networkId, unsigned char thingType) {
     this->id = thingId;
 }
 
+void CoreThing::Terminate() { CoreThing::Remove(this); }
+
 void CoreThing::Init() {}
 
-void CoreThing::SetName(const char *name) { this->name = name; }
+CoreThing *CoreThing::GetParent() { return this->parent; }
 
 // All things
-CoreThing *CoreThing::allThings[256] = {nullptr};
+CoreThing *CoreThing::allThings[THING_STORE_SIZE] = {nullptr};
 
 CoreThing *CoreThing::Get(unsigned char networkId, unsigned char thingId) {
-  for (unsigned char ix = 0; ix < 256; ix++) {
+  for (uint16_t ix = 0; ix < THING_STORE_SIZE; ix++) {
     CoreThing *thing = allThings[ix];
     if (thing == nullptr)
       continue;
@@ -34,13 +38,27 @@ CoreThing *CoreThing::Get(unsigned char networkId, unsigned char thingId) {
 }
 
 int CoreThing::Add(CoreThing *newThing) {
-  for (unsigned char ix = 0; ix < 256; ix++) {
+  for (uint16_t ix = 0; ix < THING_STORE_SIZE; ix++) {
     CoreThing *thing = allThings[ix];
     if (thing == nullptr) {
       allThings[ix] = newThing;
 
+      // std::cout << " Add new thing " << (int)ix << "\n";
       return ix;
     }
   }
   return -1;
+}
+
+void CoreThing::Remove(CoreThing *thing) { allThings[thing->id] = nullptr; }
+
+void CoreThing::UpdateAll(unsigned long currentTimeMs) {
+  // Not very efficient, but it works for now.
+  for (uint16_t ix = 0; ix < THING_STORE_SIZE; ix++) {
+    CoreThing *thing = allThings[ix];
+    if (thing != nullptr &&
+        thing->parent == nullptr) { // update all root things
+      thing->Update(currentTimeMs);
+    }
+  }
 }
\ No newline at end of file
diff --git a/CoreThing.h b/CoreThing.h
index 0ab5d05..bf441b4 100644
--- a/CoreThing.h
+++ b/CoreThing.h
@@ -1,19 +1,25 @@
 #pragma once
+#include <iostream>
 
 namespace Passer {
 namespace Control {
 
+#define THING_STORE_SIZE 256
+// IMPORTANT: values higher than 256 will need to change the CoreThing::id type
+// to 16-bit or higher, breaking the networking protocol!
+
 class CoreThing {
 public:
   // Participant *client;
   unsigned char networkId;
   /// @char The id of the thing
   unsigned char id;
-  // CoreThing *parent;
+  CoreThing *parent;
   /// @brief The type of Thing
   unsigned char type;
   const char *name = nullptr;
   const char *modelUrl = nullptr;
+  float modelScale = 1;
   // protected Sensor sensor;
 
   /// @brief Basic Thing types
@@ -36,20 +42,32 @@ public:
 public:
   CoreThing(unsigned char networkId = 0,
             unsigned char thingType = (unsigned char)Type::Undetermined);
+  /// @brief Terminated thins are no longer updated
+  void Terminate();
 
-  void SetName(const char *name);
+  /// @brief Gets the parent Thing
+  /// @return The parent Thing
+  CoreThing *GetParent();
+
+  /// @brief Updates the state of the thing
+  /// @param currentTimeMs The current clock time in milliseconds
+  virtual void Update(unsigned long currentTimeMs) {};
 
   virtual void SendBytes(unsigned char *buffer, unsigned char *ix) {};
-
-  // All things
-private:
-  static CoreThing *allThings[];
-
-  static CoreThing *Get(unsigned char networkId, unsigned char thingId);
-  static int Add(CoreThing *thing);
+  virtual void ProcessBytes(unsigned char *bytes) {};
 
 protected:
   virtual void Init();
+
+  //------------ All things
+public:
+  static CoreThing *Get(unsigned char networkId, unsigned char thingId);
+  static int Add(CoreThing *thing);
+  static void Remove(CoreThing *thing);
+  static void UpdateAll(unsigned long currentTimeMs);
+
+private:
+  static CoreThing *allThings[];
 };
 
 } // namespace Control
diff --git a/Messages.cpp b/Messages.cpp
index 5278400..67e1269 100644
--- a/Messages.cpp
+++ b/Messages.cpp
@@ -26,7 +26,7 @@ unsigned char *IMessage::ReceiveMsg(unsigned char packetSize) {
 bool IMessage::Publish(Participant *participant) {
   return participant->PublishBuffer(Serialize(participant->buffer));
 }
-bool IMessage::Send(Participant *participant) {
+bool IMessage::SendTo(Participant *participant) {
   return participant->SendBuffer(Serialize(participant->buffer));
 }
 
@@ -251,7 +251,6 @@ CustomMsg::CustomMsg(unsigned char networkId, CoreThing *thing) {
   this->thing = thing;
 }
 
-#include <iostream>
 unsigned char CustomMsg::Serialize(unsigned char *buffer) {
   unsigned char ix = this->length;
   this->thing->SendBytes(buffer, &ix);
@@ -271,3 +270,21 @@ CustomMsg CustomMsg::Receive(unsigned char *buffer, unsigned char bufferSize) {
 
 // CustomMsg
 #pragma endregion
+
+#pragma region DestroyMsg
+
+DestroyMsg::DestroyMsg(unsigned char networkId, CoreThing *thing) {
+  this->networkId = networkId;
+  this->thingId = thing->id;
+}
+
+unsigned char DestroyMsg::Serialize(unsigned char *buffer) {
+  unsigned char ix = 0;
+  buffer[ix++] = this->id;
+  buffer[ix++] = this->networkId;
+  buffer[ix++] = this->thingId;
+  return ix;
+}
+
+// DestroyMsg
+#pragma endregion
diff --git a/Messages.h b/Messages.h
index 18c8e9a..f45c3b0 100644
--- a/Messages.h
+++ b/Messages.h
@@ -18,7 +18,7 @@ public:
   static unsigned char *ReceiveMsg(unsigned char packetSize);
 
   bool Publish(Participant *participant);
-  bool Send(Participant *participant);
+  bool SendTo(Participant *participant);
 };
 
 class ClientMsg : public IMessage {
@@ -147,6 +147,18 @@ public:
   static CustomMsg Receive(unsigned char *buffer, unsigned char bufferSize);
 };
 
+class DestroyMsg : public IMessage {
+public:
+  static const unsigned char id = 0x20;
+  static const unsigned length = 3;
+  unsigned char networkId;
+  unsigned char thingId;
+
+  DestroyMsg(unsigned char networkId, CoreThing *thing);
+
+  virtual unsigned char Serialize(unsigned char *buffer) override;
+};
+
 } // namespace Control
 } // namespace Passer