Information:

What the current Stackable items are:

All Current Enchanted Books, All Current Potions, All Current Banners(Even Custom banners work), All Current Banner Patterns, All Current Boats, Normal and Soul Campfire, Eggs, Enderpearls, Honey Bottles, Horse Amor, All Current Minecarts, Snowblls, Saddles, All current signs, and All Current soup(Mushroom,Beetroot,Carrot)

This Addon is updated to the current version of Minecraft which is Version 1.16.220

This Add-on has not been realm tested so if any realm owners that can verify tha this Add-on works on realms it will be much appreciated. 

This Add-on somehow made campfires have a 3d item model so thats cool Lmao. (If you see a black square in the campfires make sure to turn on fancy graphics to remove it)

Notice:

-I removed stackable armor due to it being very buggy and exploitable. I will wait for a future version of Minecraft to allow stackable armor to work.

-I also removed Shulker boxes not because of it being buggy or exploitable, its because they no longer work (  🙁 ).

-For Some Reason this Add-on had the player.json file in it which makes it unplayable with other addons that uses player.json.

-All items were bugged so I updated all the files

To sum it up I basically fixed everything in this Add-on, it was a complete mess

Warnings:

If you have a Stack of Enchanted Books, Please refrain from putting in a whole stack or more than 1 book in an anvil to enchant an item. The Anvil will consume all of the books to enchant 1 item. This is a known bug that I do not know how to fix. 

Update 1: 

I made ALL TYPES OF BEDS STACKABLE! 

You can now bed mine in peace knowing that your inventory won't be clogged up by beds!

Spyglasses are also stackable now! 

Stacking+ is also working in the latest version of minecraft(1.17.0)

A Realm Owner confirmed that stacking+ does not work on realms so thank you for confirming that thank you very much 😀

That is all for update 1! I will be posting updates on my brand new discord which you guys should totally join! Not only is it for my addons but we have channels dedicated to other games/gamemodes! Example: Hypixel Skyblock, Genshin Impact, Valorant, and many more coming 😀