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Bigger Stack Data Pack (1.21.10, 1.20.1) – Stack Size of 64 for All Items

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Bigger Stack Data Pack (1.21.10, 1.20.1) increases the stack size of various items in Minecraft, allowing you to carry more resources and materials without cluttering your inventory. With larger stack sizes, you’ll spend less time managing your inventory and more time exploring, building, and adventuring in the vast world of Minecraft.

Features:

All items are stackable by default and update automatically when added to your inventory.
To reset items, run: /trigger biggerstacksize.config
If disabled, items reset when split in your inventory.
To customize stackable items, edit: datapack/biggerstacksize/tags/item/stackable.json
To make items temporarily unstackable (e.g., for sorting systems), rename the item “unstackable” using an anvil.

Stackable Items (up to 64):

Armor Stands
Banner Patterns
Banners
Beds
Boats
Cake
Chest Boats
Discs
Empty Buckets
Empty Shulker Boxes
Eggs
Ender Pearls
Honey Bottles
Hanging Signs
Lingering Potions
Minecarts
Potions
Saddles
Signs
Snowballs
Splash Potions
Stews
Totems of Undying
Spyglasses
Writable Books
Goat Horns
Horse Armor

Configuration:

Change stackable item groups with:/scoreboard players set &active biggerstacksize.config value
value = 0: Disabled and resets all
value = 1: Enabled

Note: Items from creative inventory or stored before installing the datapack may not stack by default. If an item doesn’t stack, drop it on the ground and pick it up again.