Avarandis's Magic Pockets

You touch two pockets that become linked. An extradimensional space of 1 cubic foot is now shared by these pockets. If an item is placed into one pocket that same item can be stored in the extradimensional space and retrieved from either pocket.

This spell can be ended with an action by the creator of the pockets. If they do so the material stored inside the space appears in front of them. The spell also ends if every pocket is destroyed. The material inside of the shared space pours out in front of the last pocket destroyed.

At Higher Levels: When you cast this spell using a spell slot of 3rd level or higher, the spell links one more pocket per spell level to the extradimensional space, provided the extra material is present.