A portable container Carl uses to quarantine and inspect potentially dangerous hunter loot.
While looting a dead hunter, Carl places the hunter's possessions into the Blast Chest before transferring the chest back into his own inventory. The procedure lets him examine a magical arrow and paper safely, and he decides to use it for hunter loot from then on.
A chest small enough for Carl to move between inventories.
Carl's safety buffer for unknown or trapped loot taken from hunters.