Containers
Containers are items or pieces of equipment designed to hold or store other items. They are particularly useful for carrying items in bulk or for better organisation during travel or exploration. Common examples include backpacks, baskets, and magical items like the Bag of Holding.
However, you cannot store one container within another of the same type—for instance, placing a backpack inside another backpack or a Bag of Holding inside another Bag of Holding. This is to prevent exploiting containers to create an infinite inventory.
That said, this rule is ultimately subject to the DM's discretion, who may allow exceptions depending on the campaign's needs or circumstances.
Crossbow Bolt Case
Adventuring Gear, 100 SP, M.
A Crossbow Bolt Case holds up to 20 Bolts.
Backpack
Adventuring Gear, 20 sP, M.
A Backpack has 8 Inventory Slots. It can also serve as a saddlebag. Doesn't take Inventory Slot when Worn.
Bag of Holding
Wondrous Items, uncommon, M.
A Bag of Holding has 30 Inventory Slots. It doesn't take Inventory Slot when Worn.
Basket
Adventuring Gear, 4 SP, S.
A Basket has 8 Inventory Slots.
Magazine Belt
Adventuring Gear, 100 SP, M.
A Magazine Belt holds up to 30 Firearms Bullets of any combinations.
Pouch
Adventuring Gear, 5 SP, S.
A Pouch has 2 Inventory Slots. It can also holds up to 20 Sling Bullets or 50 Needles.
Quiver
Adventuring Gear, 100 SP, M.
A Quiver holds up to 20 Arrows.