DirtChest 9000!/de

The DirtChest 9000! is a joke chest added by the mod. It only has 1 storage slot, which can only contain or, meaning the chest's maximum item capacity is 1 stack of one of those. Upon placing it down, the chest will contain a by  titled How to use your DirtChest 9000!. It reads:

Despite the book noting the particular form of destruction of lava, throwing the book into lava has no special behavior.