diff --git a/Nautilus/Assets/PrefabInfo.cs b/Nautilus/Assets/PrefabInfo.cs
index 9562621d..8b05d0a2 100644
--- a/Nautilus/Assets/PrefabInfo.cs
+++ b/Nautilus/Assets/PrefabInfo.cs
@@ -48,7 +48,7 @@ public static PrefabInfo WithTechType(string classId, bool unlockAtStart = false
     /// <param name="displayName">The display name of this Tech Type, can be anything. If null or empty, this will use the language line "{enumName}" instead.</param>
     /// <param name="description">The tooltip displayed when hovered in the PDA, can be anything. If null or empty, this will use the language line "Tooltip_{enumName}" instead.</param>
     /// <param name="language">The language for this entry. Defaults to English.</param>
-    /// <param name="unlockAtStart">Whether this tech type should be unlocked on game start or not. Default to <see langword="true"/>.</param>
+    /// <param name="unlockAtStart">Whether this tech type should be unlocked on game start or not. Defaults to <see langword="false"/>.</param>
     /// <param name="techTypeOwner">The assembly that owns the created tech type. The name of this assembly will be shown in the PDA.</param>
     /// <returns>An instance of the constructed <see cref="PrefabInfo"/>.</returns>
     public static PrefabInfo WithTechType(string classId, string displayName, string description, string language = "English", bool unlockAtStart = false, Assembly techTypeOwner = null)
@@ -109,4 +109,4 @@ public PrefabInfo WithFileName(string fileName)
     {
         return this with {PrefabFileName = fileName};
     }
-}
\ No newline at end of file
+}
diff --git a/Nautilus/Crafting/TabNode.cs b/Nautilus/Crafting/TabNode.cs
index 06b7b937..369939bb 100644
--- a/Nautilus/Crafting/TabNode.cs
+++ b/Nautilus/Crafting/TabNode.cs
@@ -23,9 +23,9 @@ internal TabNode(string[] path, CraftTree.Type scheme, Sprite sprite, string nam
         Sprite = sprite;
         DisplayName = displayName;
         Name = name;
-        Id = $"{Scheme.ToString()}_{Name}";
+        Id = $"{Scheme.ToString()}Menu_{Name}";
 
-        ModSprite.Add(new ModSprite(SpriteManager.Group.Category, Id, Sprite));
+        ModSprite.Add(new ModSprite(SpriteManager.Group.Category, $"{Scheme.ToString()}_{Name}", Sprite));
 
         if (!string.IsNullOrEmpty(displayName))
         {
diff --git a/Nautilus/Handlers/CoordinatedSpawnsHandler.cs b/Nautilus/Handlers/CoordinatedSpawnsHandler.cs
index 44141bdd..150da21d 100644
--- a/Nautilus/Handlers/CoordinatedSpawnsHandler.cs
+++ b/Nautilus/Handlers/CoordinatedSpawnsHandler.cs
@@ -77,6 +77,7 @@ public struct SpawnInfo : IEquatable<SpawnInfo>
     internal Vector3 Scale { get; }
     // For the sake of backwards compatibility, a scale of 0x0x0 is automatically converted to 1x1x1. Sorry, no 0x scale entities allowed.
     internal Vector3 ActualScale => Scale == default ? Vector3.one : Scale;
+    internal Action<GameObject> OnSpawned { get; }
 
     /// <summary>
     /// Initializes a new <see cref="SpawnInfo"/>.
@@ -84,7 +85,7 @@ public struct SpawnInfo : IEquatable<SpawnInfo>
     /// <param name="techType">TechType to spawn.</param>
     /// <param name="spawnPosition">Position to spawn into.</param>
     public SpawnInfo(TechType techType, Vector3 spawnPosition)
-        : this(default, techType, spawnPosition, Quaternion.identity, Vector3.one) { }
+        : this(default, techType, spawnPosition, Quaternion.identity, Vector3.one, null) { }
 
     /// <summary>
     /// Initializes a new <see cref="SpawnInfo"/>.
@@ -92,7 +93,7 @@ public SpawnInfo(TechType techType, Vector3 spawnPosition)
     /// <param name="classId">ClassID to spawn.</param>
     /// <param name="spawnPosition">Position to spawn into.</param>
     public SpawnInfo(string classId, Vector3 spawnPosition)
-        : this(classId, default, spawnPosition, Quaternion.identity, Vector3.one) { }
+        : this(classId, default, spawnPosition, Quaternion.identity, Vector3.one, null) { }
 
     /// <summary>
     /// Initializes a new <see cref="SpawnInfo"/>.
@@ -101,7 +102,7 @@ public SpawnInfo(string classId, Vector3 spawnPosition)
     /// <param name="spawnPosition">Position to spawn into.</param>
     /// <param name="rotation">Rotation to spawn at.</param>
     public SpawnInfo(TechType techType, Vector3 spawnPosition, Quaternion rotation)
-        : this(default, techType, spawnPosition, rotation, Vector3.one) { }
+        : this(default, techType, spawnPosition, rotation, Vector3.one, null) { }
 
     /// <summary>
     /// Initializes a new <see cref="SpawnInfo"/>.
@@ -110,7 +111,7 @@ public SpawnInfo(TechType techType, Vector3 spawnPosition, Quaternion rotation)
     /// <param name="spawnPosition">Position to spawn into.</param>
     /// <param name="rotation">Rotation to spawn at.</param>
     public SpawnInfo(string classId, Vector3 spawnPosition, Quaternion rotation)
-        : this(classId, default, spawnPosition, rotation, Vector3.one) { }
+        : this(classId, default, spawnPosition, rotation, Vector3.one, null) { }
     
     /// <summary>
     /// Initializes a new <see cref="SpawnInfo"/>.
@@ -120,7 +121,7 @@ public SpawnInfo(string classId, Vector3 spawnPosition, Quaternion rotation)
     /// <param name="rotation">Rotation to spawn at.</param>
     /// <param name="scale">Scale to spawn with.</param>
     public SpawnInfo(TechType techType, Vector3 spawnPosition, Quaternion rotation, Vector3 scale)
-        : this(default, techType, spawnPosition, rotation, scale) { }
+        : this(default, techType, spawnPosition, rotation, scale, null) { }
 
     /// <summary>
     /// Initializes a new <see cref="SpawnInfo"/>.
@@ -130,7 +131,7 @@ public SpawnInfo(TechType techType, Vector3 spawnPosition, Quaternion rotation,
     /// <param name="rotation">Rotation to spawn at.</param>
     /// <param name="scale">Scale to spawn with.</param>
     public SpawnInfo(string classId, Vector3 spawnPosition, Quaternion rotation, Vector3 scale)
-        : this(classId, default, spawnPosition, rotation, scale) { }
+        : this(classId, default, spawnPosition, rotation, scale, null) { }
 
     /// <summary>
     /// Initializes a new <see cref="SpawnInfo"/>.
@@ -139,7 +140,7 @@ public SpawnInfo(string classId, Vector3 spawnPosition, Quaternion rotation, Vec
     /// <param name="spawnPosition">Position to spawn into.</param>
     /// <param name="rotation">Rotation to spawn at.</param>
     public SpawnInfo(TechType techType, Vector3 spawnPosition, Vector3 rotation)
-        : this(default, techType, spawnPosition, Quaternion.Euler(rotation), Vector3.one) { }
+        : this(default, techType, spawnPosition, Quaternion.Euler(rotation), Vector3.one, null) { }
 
     /// <summary>
     /// Initializes a new <see cref="SpawnInfo"/>.
@@ -148,7 +149,7 @@ public SpawnInfo(TechType techType, Vector3 spawnPosition, Vector3 rotation)
     /// <param name="spawnPosition">Position to spawn into.</param>
     /// <param name="rotation">Rotation to spawn at.</param>
     public SpawnInfo(string classId, Vector3 spawnPosition, Vector3 rotation)
-        : this(classId, default, spawnPosition, Quaternion.Euler(rotation), Vector3.one) { }
+        : this(classId, default, spawnPosition, Quaternion.Euler(rotation), Vector3.one, null) { }
     
     /// <summary>
     /// Initializes a new <see cref="SpawnInfo"/>.
@@ -158,7 +159,7 @@ public SpawnInfo(string classId, Vector3 spawnPosition, Vector3 rotation)
     /// <param name="rotation">Rotation to spawn at.</param>
     /// <param name="scale">Scale to spawn with.</param>
     public SpawnInfo(TechType techType, Vector3 spawnPosition, Vector3 rotation, Vector3 scale)
-        : this(default, techType, spawnPosition, Quaternion.Euler(rotation), scale) { }
+        : this(default, techType, spawnPosition, Quaternion.Euler(rotation), scale, null) { }
 
     /// <summary>
     /// Initializes a new <see cref="SpawnInfo"/>.
@@ -168,10 +169,32 @@ public SpawnInfo(TechType techType, Vector3 spawnPosition, Vector3 rotation, Vec
     /// <param name="rotation">Rotation to spawn at.</param>
     /// <param name="scale">Scale to spawn with.</param>
     public SpawnInfo(string classId, Vector3 spawnPosition, Vector3 rotation, Vector3 scale)
-        : this(classId, default, spawnPosition, Quaternion.Euler(rotation), scale) { }
+        : this(classId, default, spawnPosition, Quaternion.Euler(rotation), scale, null) { }
+    
+    /// <summary>
+    /// Initializes a new <see cref="SpawnInfo"/>.
+    /// </summary>
+    /// <param name="techType">TechType to spawn.</param>
+    /// <param name="spawnPosition">Position to spawn into.</param>
+    /// <param name="rotation">Rotation to spawn at.</param>
+    /// <param name="scale">Scale to spawn with.</param>
+    /// <param name="onSpawned">Callback that is used when the object is successfully spawned.</param>
+    public SpawnInfo(TechType techType, Vector3 spawnPosition, Quaternion rotation, Vector3 scale, Action<GameObject> onSpawned)
+        : this(default, techType, spawnPosition, rotation, scale, onSpawned) { }
 
+    /// <summary>
+    /// Initializes a new <see cref="SpawnInfo"/>.
+    /// </summary>
+    /// <param name="classId">ClassID to spawn.</param>
+    /// <param name="spawnPosition">Position to spawn into.</param>
+    /// <param name="rotation">Rotation to spawn at.</param>
+    /// <param name="scale">Scale to spawn with.</param>
+    /// <param name="onSpawned">Callback that is used when the object is successfully spawned.</param>
+    public SpawnInfo(string classId, Vector3 spawnPosition, Quaternion rotation, Vector3 scale, Action<GameObject> onSpawned)
+        : this(classId, default, spawnPosition, rotation, scale, onSpawned) { }
+    
     [JsonConstructor]
-    internal SpawnInfo(string classId, TechType techType, Vector3 spawnPosition, Quaternion rotation, Vector3 scale)
+    internal SpawnInfo(string classId, TechType techType, Vector3 spawnPosition, Quaternion rotation, Vector3 scale, Action<GameObject> onSpawned)
     {
         ClassId = classId;
         TechType = techType;
@@ -183,6 +206,7 @@ internal SpawnInfo(string classId, TechType techType, Vector3 spawnPosition, Qua
             _ => SpawnType.TechType
         };
         Scale = scale;
+        OnSpawned = onSpawned;
     }
 
     /// <summary>
diff --git a/Nautilus/MonoBehaviours/EntitySpawner.cs b/Nautilus/MonoBehaviours/EntitySpawner.cs
index f4826d74..4edda351 100644
--- a/Nautilus/MonoBehaviours/EntitySpawner.cs
+++ b/Nautilus/MonoBehaviours/EntitySpawner.cs
@@ -68,6 +68,8 @@ private IEnumerator SpawnAsync()
 
             obj.SetActive(true);
 
+            spawnInfo.OnSpawned?.Invoke(obj);
+
             LargeWorldEntity.Register(obj);
 
             LargeWorldStreamerPatcher.SavedSpawnInfos.Add(spawnInfo);
diff --git a/Version.targets b/Version.targets
index 5e7bd9cd..14b34be0 100644
--- a/Version.targets
+++ b/Version.targets
@@ -3,7 +3,7 @@
     <PropertyGroup>
         <!-- The assembly uses this version number. !-->
         <VersionPrefix>1.0.0</VersionPrefix>
-        <SuffixNumber>31</SuffixNumber>
+        <SuffixNumber>32</SuffixNumber>
         <VersionSuffix>pre.$(SuffixNumber)</VersionSuffix>
     </PropertyGroup>
 </Project>
\ No newline at end of file