There are a few different types of folders on this list, but what they all have in common is that they can store whatever they can store in VERY large quantities. Additionally, any folders that can deal with items or blocks will automatically store the items or blocks that you pick up (Toggleable in the configs).

Extracting items from a folder in the crafting window:

Combining two folders that holds the same thing together:

These folders can take in your regular items or blocks, as long as the items or blocks do not have durability metadata or NBT data. They are good for your regular cobblestone or sticks storage. Shapelessly craft with any applicable items or blocks to create a non-empty folder with that item or block stored in it.

Works the same as Normal Folders, but with a configurable storage limit. The dye used in the crafting determines the folder color, and the storage limit is shared across all colors. Default limit is 1,000

These folders are different from the normal ones in that they can take in tools or items that can take durability damage. They will allow you to store damaged tools in them. As a bonus, they can automatically shapelessly repair any items stored in them (E.G, one iron shovel with 13 uses left on it will get combined with another iron shovel with 56 uses left on it, making a more complete shovel). Good for all the damaged bows that drops from skeletons in your run of the mill mob grinder. Must be crafted with an undamaged tool/item first.

Showing the contents of a durability folder - there are 11 Golden Swords and one damaged sword with 11 uses left on it:

There is also a toggle in the folder's tooltip. When Ignore NBT is OFF, it will ignore any extra NBT data tools may contain, like enchantments, and just store it anyway. When it is OFF, it will respect the NBT data and will not store them. Right-click with the folder to toggle the mode.

These folders will simply store any mob you right-click on with, making them useful for moving a large amount of mobs or animals any distance. They will not store boss mobs or babies (with the exception of baby zombies), and they will not retain any extra NBT data the mobs may have.

You can add mobs you don't want picked up by the mob folders to a blacklist in the mod's config file.

Fluid folders can store any fluid that can be placed into the world. To store a fluid, just rightclick one as you would a bucket, and it will store it. You can toggle the placing or taking of fluids from the folder by:

• (on or before version 0.1.84) shift+leftclicking the air
• (on or after version 0.2.0.19) shift+scroll

When Place Mode is OFF, you can take fluids. When it is ON, you cannot take fluids, but you can place whatever fluids you have available, as long as there is enough to fill a bucket (1000mB).

NBT Folders work like regular folders, except they can take in items/blocks with extra NBT information, and store them exactly as they are. Very good for storing potions that may drop from witches, or enchanted books.

Auto Folders are capable of storing either regular items or fluids in themselves. What makes them "automatic" is that they will start off empty, and then start storing an item or fluid once one is inserted for the first time, making it useful for fluids that otherwise cannot be placed into the world.