The Barrel
Barrels can store up to 64 stacks of a single item. So, a single barrel can store 4096 sticks, 64 swords, or 1024 eggs.
Right clicking a barrel will store what you're holding, and left clicking removes a stack. Shift left clicking will remove a single item. Double right-clicking will fill the barrel from your inventory.
Barrels can have any direction and orientation. Clicking near the side edge of a block will place the barrel with its top pointing to that side.
Items can only be extracted from the bottom of the barrel. Insertion is done from the top, or the back.
There are a few variations of the standard barrel.
The hopping barrel will pull one item from its above into it, and push one item out its bottom, at the same speed as a vanilla hopper. It also hops. A direct redstone signal will disable it.
The silky barrel will hold its contents if it is broken with a silk-touch axe.
The first item put into a sticky barrel gets stuck to the slime, and must be removed manually.
If you are under the influence of a Strength Potion, you can push barrels with a knockback sword. They can be pushed up stairs and slabs.
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