Studying the Vacuos element and how it interacts with other elements, you think you can apply this knowledge to enchant various containers so they gain other abilities, such as being able to store more items.
Enchanting a backpack with magic and materials of magical nature will increase its storage capacity.
The result, a Thurmaturge's Backpack, is closely linked to the aura. Using the gained extra storage will create flux, and too much of it may have negative effects on the backpack and wearer.
Similarly, it may be possible to infuse a reinforced iron chest with magic, which will result in a more durable chest that can store even more items.
Just like the backpack, it can have negative effects on the aura when it's too full, and when there's too much flux, things might get messy...
Prerequisite: Unified Thaumic Field Theory
Compared with its mobile counterpart (above) the Thaumium Chest is more costly to construct, requiring four Thaumium Ingots, three blocks of Arcane Wood, a Block of Iron, and a Reinforced Iron Chest (courtesy of BetterStorage).