Vault of Amber

You arrange four amber gems in a square no larger than 15 feet across on any side and trace Transmutative sigils above each of them. All non-living items within the square are pulled into a 15-foot cube demi-plane capable of holding no more than 500lbs of material and are held in stasis. Spell effects do not trigger, food does not rot, and materials do not age or weather in this demi-plane. If placing an object inside the demi-plane would result in the weight limit or the dimensions being exceeded, the spell will fail to pull it in.

The caster can use an Action to touch an amber gem and speak the name of any number of items currently contained within the demi-plane. The objects are expelled from the gem you desire in a space within 5ft of it starting with the largest item and ending with the smallest. If there is not enough room for the object to fit, it is not expelled.

If any of the amber gems are dispelled or shattered, as long as one remains, you can recast the spell using replacement amber gems and retain access to the demi-plane. However if all the amber gems are dispelled or shattered, the demi-plane will fall apart and its contents are scattered across the astral sea.

You can only maintain a single demi-plane created by Vault of Amber at a time.