Black Hole Unit

This can only store one type of item, but it can store up to 2.1 billion of it.

This block keeps its contents when it is mined. You can delete everything stored inside the Black Hole Unit by putting it in a crafting grid.

Black Hole Controller

Since Black Hole Units and Black Hole Tanks hold their contents when you mine them, you can put up to 12 of them in the Black Hole Controller. And while you can't access their contents directly, any external transfer mechanism only needs to interact with the Black Hole Controller in order to access the contents inside the Black Hole Units and Black Hole Tanks.

Item Splitter

This machine will split all incoming items to adjacent inventories (such as a chest). You can specify a maximum Stack Size, which keeps the Item Stacks of the destination inventories to the stack size that you specify. You can also disable transfer to certain sides.