This mod adds a barrel block to the game which can be used to store items and blocks. The tank added by this mod is completely modular, and can be upgraded to allow for more item storage! Only tier 1 tanks can be crafted, however there are upgrade items which can raise the tier of a tank. For a tier upgrade to work it must be applied on a barrel that is the same tier, or one higher than the barrel.
The recipe for the tier 1 barrels are a chest surrounded by stone and the material of that tier. An upgrade item is similar, however a slime ball is used rather than a chest!