diff --git a/NHSE.Core/Resources/byte/item_kind.bin b/NHSE.Core/Resources/byte/item_kind.bin
index 490d0b6..426fc3f 100644
Binary files a/NHSE.Core/Resources/byte/item_kind.bin and b/NHSE.Core/Resources/byte/item_kind.bin differ
diff --git a/NHSE.Core/Structures/Item/ItemInfo.cs b/NHSE.Core/Structures/Item/ItemInfo.cs
index 8267569..6223d4c 100644
--- a/NHSE.Core/Structures/Item/ItemInfo.cs
+++ b/NHSE.Core/Structures/Item/ItemInfo.cs
@@ -1,4 +1,7 @@
-namespace NHSE.Core
+using System.Collections.Generic;
+using static NHSE.Core.ItemKind;
+
+namespace NHSE.Core
 {
     /// <summary>
     /// Fetching metadata about an <see cref="Item"/>
@@ -40,5 +43,147 @@ public static ItemMenuIconType GetMenuIcon(ushort id)
                 return ItemMenuIconType.Unknown;
             return (ItemMenuIconType)ItemMenuIcons[id];
         }
+
+        public static bool TryGetMaxStackCount(Item item, out ushort max) => TryGetMaxStackCount(item.DisplayItemId, out max);
+
+        public static bool TryGetMaxStackCount(ushort id, out ushort max)
+        {
+            var kind = GetItemKind(id);
+            return MaxCountByKind.TryGetValue(kind, out max);
+        }
+
+        private static readonly Dictionary<ItemKind, ushort> MaxCountByKind = new Dictionary<ItemKind, ushort>
+        {
+            {Kind_Ftr, 00001},
+            {Kind_RoomWall, 00001},
+            {Kind_RoomFloor, 00001},
+            {Kind_Rug, 00001},
+            {Kind_RugMyDesign, 00001},
+            {Kind_Socks, 00001},
+            {Kind_Cap, 00001},
+            {Kind_Helmet, 00001},
+            {Kind_Accessory, 00001},
+            {Kind_Bag, 00001},
+            {Kind_Umbrella, 00001},
+            {Kind_FishingRod, 00001},
+            {Kind_Net, 00001},
+            {Kind_Shovel, 00001},
+            {Kind_Axe, 00001},
+            {Kind_Watering, 00001},
+            {Kind_Slingshot, 00001},
+            {Kind_ChangeStick, 00001},
+            {Kind_WoodenStickTool, 00001},
+            {Kind_Ladder, 00001},
+            {Kind_GroundMaker, 00001},
+            {Kind_RiverMaker, 00001},
+            {Kind_CliffMaker, 00001},
+            {Kind_PartyPopper, 00010},
+            {Kind_Ocarina, 00001},
+            {Kind_Panflute, 00001},
+            {Kind_Tambourine, 00001},
+            {Kind_FierworkHand, 00010},
+            {Kind_StickLight, 00001},
+            {Kind_Uchiwa, 00001},
+            {Kind_Windmill, 00001},
+            {Kind_BlowBubble, 00010},
+            {Kind_Partyhorn, 00001},
+            {Kind_Balloon, 00001},
+            {Kind_Timer, 00001},
+            {Kind_HandheldPennant, 00001},
+            {Kind_TreeSeedling, 00010},
+            {Kind_Tree, 00001},
+            {Kind_BushSeedling, 00010},
+            {Kind_Bush, 00001},
+            {Kind_VegeSeedling, 00010},
+            {Kind_VegeTree, 00001},
+            {Kind_Vegetable, 00010},
+            {Kind_Weed, 00099},
+            {Kind_FlowerSeed, 00010},
+            {Kind_FlowerBud, 00001},
+            {Kind_Flower, 00010},
+            {Kind_Fruit, 00010},
+            {Kind_Mushroom, 00010},
+            {Kind_Turnip, 00010},
+            {Kind_TurnipExpired, 00001},
+            {Kind_FishBait, 00010},
+            {Kind_PitFallSeed, 00010},
+            {Kind_Medicine, 00010},
+            {Kind_CraftMaterial, 00030},
+            {Kind_CraftRemake, 00050},
+            {Kind_Ore, 00030},
+            {Kind_CraftPhoneCase, 00001},
+            {Kind_Honeycomb, 00010},
+            {Kind_Trash, 00001},
+            {Kind_SnowCrystal, 00010},
+            {Kind_AutumnLeaf, 00010},
+            {Kind_Sakurapetal, 00010},
+            {Kind_XmasDeco, 00010},
+            {Kind_StarPiece, 00010},
+            {Kind_Insect, 00001},
+            {Kind_Fish, 00001},
+            {Kind_DiveFish, 00001},
+            {Kind_ShellDrift, 00010},
+            {Kind_ShellFish, 00001},
+            {Kind_FishToy, 00001},
+            {Kind_InsectToy, 00001},
+            {Kind_Fossil, 00001},
+            {Kind_FossilUnknown, 00001},
+            {Kind_Music, 00001},
+            {Kind_MusicMiss, 00001},
+            {Kind_Bromide, 00001},
+            {Kind_Poster, 00001},
+            {Kind_HousePost, 00001},
+            {Kind_DoorDeco, 00001},
+            {Kind_Fence, 00050},
+            {Kind_DummyRecipe, 00001},
+            {Kind_DummyDIYRecipe, 00001},
+            {Kind_DummyHowtoBook, 00001},
+            {Kind_LicenseItem, 00001},
+            {Kind_BridgeItem, 00001},
+            {Kind_SlopeItem, 00001},
+            {Kind_DIYRecipe, 00001},
+            {Kind_MessageBottle, 00001},
+            {Kind_WrappingPaper, 00010},
+            {Kind_HousingKit, 00001},
+            {Kind_HousingKitRcoQuest, 00001},
+            {Kind_HousingKitBirdge, 00001},
+            {Kind_Money, 00010},
+            {Kind_FireworkM, 00001},
+            {Kind_BdayCupcake, 00010},
+            {Kind_YutaroWisp, 00005},
+            {Kind_JohnnyQuest, 00010},
+            {Kind_JohnnyQuestDust, 00010},
+            {Kind_PirateQuest, 00010},
+            {Kind_QuestWrapping, 00001},
+            {Kind_LostQuest, 00001},
+            {Kind_LostQuestDust, 00001},
+            {Kind_TailorTicket, 00010},
+            {Kind_TreasureQuest, 00001},
+            {Kind_TreasureQuestDust, 00001},
+            {Kind_MilePlaneTicket, 00010},
+            {Kind_RollanTicket, 00005},
+            {Kind_EasterEgg, 00030},
+            {Kind_LoveCrystal, 00030},
+            {Kind_Candy, 00030},
+            {Kind_Giftbox, 00001},
+            {Kind_PinataStick, 00001},
+            {Kind_NpcOutfit, 00001},
+            {Kind_PlayerDemoOutfit, 00001},
+            {Kind_Picture, 00001},
+            {Kind_Sculpture, 00001},
+            {Kind_PictureFake, 00001},
+            {Kind_SculptureFake, 00001},
+            {Kind_SmartPhone, 00001},
+            {Kind_DummyFtr, 00001},
+            {Kind_SequenceOnly, 00001},
+            {Kind_MyDesignObject, 00001},
+            {Kind_MyDesignTexture, 00001},
+            {Kind_DummyWrapping, 00001},
+            {Kind_DummyPresentbox, 00001},
+            {Kind_DummyCardboard, 00001},
+            {Kind_EventObjFtr, 00001},
+            {Kind_NnpcRoomMarker, 00001},
+            {Kind_PhotoStudioList, 00001},
+        };
     }
 }
diff --git a/NHSE.Core/Structures/Item/ItemKind.cs b/NHSE.Core/Structures/Item/ItemKind.cs
index 1f2e92c..14bde6c 100644
--- a/NHSE.Core/Structures/Item/ItemKind.cs
+++ b/NHSE.Core/Structures/Item/ItemKind.cs
@@ -147,6 +147,7 @@ public enum ItemKind : byte
         Kind_WoodenStickTool,
         Kind_WrappingPaper,
         Kind_YutaroWisp,
+        Kind_XmasDeco,
         Onepiece_Dress,
         Onepiece_Long,
         Onepiece_Middle,
diff --git a/NHSE.Parsing/GameBCSVDumper.cs b/NHSE.Parsing/GameBCSVDumper.cs
index 911e535..eec5d95 100644
--- a/NHSE.Parsing/GameBCSVDumper.cs
+++ b/NHSE.Parsing/GameBCSVDumper.cs
@@ -56,6 +56,14 @@ void DumpU(string fn, ushort[] ushorts, string dir = "bin")
                 Console.WriteLine($"Created {fn}");
             }
 
+            void DumpD<T, S>(string fn, Dictionary<T, S> dict, string dir = "text")
+            {
+                Directory.CreateDirectory(Path.Combine(dest, dir));
+                var lines = dict.Select(z => $"{{{z.Key}, {z.Value:00000}}},");
+                File.WriteAllLines(Path.Combine(dest, dir, fn), lines);
+                Console.WriteLine($"Created {fn}");
+            }
+
             DumpS("bcsv_map.txt", BCSV.EnumLookup.Dump());
             DumpS("lifeSupportAchievement.txt", GetLifeSupportAchievementList(pathBCSV));
             DumpS("recipeDictionary.txt", GetRecipeList(pathBCSV));
@@ -83,6 +91,8 @@ void DumpU(string fn, ushort[] ushorts, string dir = "bin")
             DumpS("DoorKind.txt", GetNumberedEnumValues(pathBCSV, "StructureHouseDoorParam.bcsv", 0x39B5A93D, 0x54706054));
             DumpS("WallKind.txt", GetNumberedEnumValues(pathBCSV, "StructureHouseWallParam.bcsv", 0x39B5A93D, 0x54706054));
 
+            DumpD("ItemStack.txt", GetItemStackDict(pathBCSV));
+
             DumpB("item_kind.bin", GetItemKindArray(pathBCSV));
             DumpB("item_size.bin", GetItemSizeArray(pathBCSV));
             DumpU("item_menuicon.bin", GetItemMenuIconArray(pathBCSV));
@@ -227,6 +237,59 @@ public static byte[] GetItemSizeArray(string pathBCSV, string fn = "ItemParam.bc
             return result;
         }
 
+        public static Dictionary<ItemKind, ushort> GetItemStackDict(string pathBCSV, string fn = "ItemKind.bcsv")
+        {
+            var path = Path.Combine(pathBCSV, fn);
+            var data = File.ReadAllBytes(path);
+            var bcsv = new BCSV(data);
+
+            var dict = bcsv.GetFieldDictionary();
+            var fStack = dict[0x4C9BA961]; // MultiHoldMaxNum
+            var fKind = dict[0x87BF00E8]; // Label
+
+            // clothing is split out more granularly in ItemKind and would cause errors
+            // since it's not likely to ever be stackable, we can skip
+            // none-type can be skipped and doesn't exist in ItemKind either
+            List<string> skipLabels = new List<string>
+            {
+                "TopsDefault",
+                "Tops",
+                "OnePiece",
+                "MarineSuit",
+                "BottomsDefault",
+                "Bottoms",
+                "Shoes",
+                "None"
+            };
+
+            var result = new Dictionary<ItemKind, ushort>();
+            for (int i = 0; i < bcsv.EntryCount; i++)
+            {
+                var stack = bcsv.ReadValue(i, fStack);
+                switch (stack)
+                {
+                    case "-1": // for some reason turnips have a stack value of -1, should be 10...
+                        stack = "10";
+                        break;
+                    case "0": // the game stores items that cannot be stacked as 0, so technically they stack to 1
+                        stack = "1";
+                        break;
+                }
+
+                var stackval = ushort.Parse(stack);
+                var kind = bcsv.ReadValue(i, fKind).TrimEnd('\0');
+                if (skipLabels.Contains(kind))
+                    continue;
+
+                kind = "Kind_" + kind;
+                if (!Enum.TryParse<ItemKind>(kind, out var k))
+                    throw new InvalidEnumArgumentException($"{kind} is not a known enum value @ index {i}. Update the enum index first.");
+                result.Add(k, stackval);
+            }
+
+            return result;
+        }
+
         public static ushort[] GetItemMenuIconArray(string pathBCSV, string fn = "ItemParam.bcsv")
         {
             var path = Path.Combine(pathBCSV, fn);
diff --git a/NHSE.WinForms/Controls/ItemEditor.Designer.cs b/NHSE.WinForms/Controls/ItemEditor.Designer.cs
index 8258434..4dbc07c 100644
--- a/NHSE.WinForms/Controls/ItemEditor.Designer.cs
+++ b/NHSE.WinForms/Controls/ItemEditor.Designer.cs
@@ -154,6 +154,7 @@ private void InitializeComponent()
             this.L_Count.TabIndex = 7;
             this.L_Count.Text = "Count:";
             this.L_Count.TextAlign = System.Drawing.ContentAlignment.MiddleRight;
+            this.L_Count.DoubleClick += new System.EventHandler(this.L_Count_DoubleClick);
             // 
             // L_Uses
             // 
diff --git a/NHSE.WinForms/Controls/ItemEditor.cs b/NHSE.WinForms/Controls/ItemEditor.cs
index b1d9024..fca5b92 100644
--- a/NHSE.WinForms/Controls/ItemEditor.cs
+++ b/NHSE.WinForms/Controls/ItemEditor.cs
@@ -278,6 +278,16 @@ private void ToggleEditorVisibility(ItemKind k)
             }
         }
 
+        private void L_Count_DoubleClick(object sender, EventArgs e)
+        {
+            Item currentItem = SetItem(new Item());
+            var result = ItemInfo.TryGetMaxStackCount(currentItem, out var max);
+            if (!result)
+                return;
+            currentItem.Count = (ushort)(max - 1);
+            LoadItem(currentItem);
+        }
+
         private void CB_CountAlias_SelectedValueChanged(object sender,EventArgs e)
         {
             var val = WinFormsUtil.GetIndex((ComboBox)sender);