Amulet of Storage

This amulet magically teleports a creature to a demiplane. As an action, the wearer can press the button on the amulet while touching a creature with the amulet expending one charge. The creature must succeed on a DC 17 Wisdom saving throw or be teleported into the amulet and to the demiplane. If a creature is inside the amulet demiplane and the wearer presses the button, the creature inside is teleported to a random location within 5 feet of the amulet. If there is no room to fit the creature you teleported, it appears in the closest unoccupied space next to the chosen random location. One expended charge can both teleport one creature into the amulet and one creature out of the amulet simultaneously.

Inside, the amulet demiplane is an area no more than 50,000 cubic feet. The GM determines the configuration and other details within the amulet. A creature inside the amulet can leave with any magic that allows one to teleport or plane shift.

This amulet has two charges. The charges on the amulet reset after the wearer takes a long rest. 

Notes: Container, Necklace, Jewelry