When ritual casting this spell on a storage unit, the object shrinks to a palm sized version if itself, any items in it are stored in a pocket dimension that the spell creates. The pocket dimension has the same exact dimensions as the object this spell was used on. You can return the object to it's full size as a bonus action, replacing all of the items back inside the object.
While there are items in the pocket dimension, you can use a bonus action to summon one in to your hand, you can use an action to dismiss the summoned item back in to the pocket dimension, you must be touching the item to do this, and the object must have been summoned from the pocket dimension.
The ruby in material components must be worth an extra 10 GP per additional square foot.
* - (A chest, drawer, or any storage unit with dimensions of at least 2 by 6 feet, with 3 feet height, and a ruby worth 50 GP.)