Magic Item ideas

Before I begin, go away if you're shipwrecked on the Brass Cove. You know who you are.

So I'm setting up a series of magical items hand crafted by longdead (maybe) dwarf named Durli Emberthumb, and so far I like to think they're considerably good. They'll be far and few between but I like the worldbuilding of it. Each item is hand made and one of a kind, stamped with his makers mark. I like the idea of the items being identifiable as his unique work and I aim to excite the players when they realize its something made by him before they even Identify it.

So far I have what is two things, aimed at mining but with alternative use.

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Burdenpack

Wondrous Item, Very Rare

Forged for dwarvern miners working deep beneath the mountains, the Burdenpack is a reinforced extradimensional container built to haul heavy ore without exhausting the carrier.

A Makers Mark is stamped inside the top flap.

Crafted by Durli Emberthumb of the Seventh Foundry. Handle with respect, fool.

Massive Capacity

The Burdenpack opens into a 40-cubic-foot extradimensional pocket, far larger than that of a normal bag of holding.

It can hold up to 1000 pounds of stone, ore, tools or equipment.

Its weight will never exceed 20 pounds.

Weight Compression Field

Anything placed inside immediately loses its physical weight until removed.

Breach Safety

If the bag is ruptured or the pocket is destroyed by any means, all contents harmlessly spill into the nearest 10-foot space in neat piles instead of violently exploding like a Bag of Holding.

Dwarves consider this a mandatory safety feature.

Extradimensional Stability

Unlike a Bag of Holding, the Burdenpack is safe to combine with Portable Holes and Bags of Holding.

The second is a bit less exciting, but fits the vibe for where these first two items can be found.

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Emberthumbs Ironlung Rebreather

Wondrous Item (Uncommon)

Designed for smoke filled tunnels and high temperature shafts, this brass and leather facepiece has a crystal filtration core. Two small bellows pump steadily on their own when worn.

A Makers Mark is stamped on the inside of one of the straps.

Crafted by Durli Emberthumb of the Seventh Foundry. Handle with respect, fool.

While wearing this mask, you gain the following benefits:

Breath Without Air

You can breathe normally in environments containing:

Smoke
Dust
Ash
Nonmagical Toxic Fumes
Volcanic Gas
Pressure Vents
Forge Exhaust.

You automatically succeed on saving throws against nonmagical inhaled hazards.

Partial Protection from Poison

You have Advantage on Saving Throws against inhaled poisons, magical or nonmagical. If you fail the save against a magical inhaled poison, you take half damage or suffer lessened effects (DM Discretion).

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Any suggestions for more items or ways I can improve these ones are welcome. At the moment, these two items are going to be found in the vault of an abandoned dwarvern mine, locked up fairly securely.