OBJJP products come with a cotton bag. Partly so they can be given as gifts. But not only that — so the material is not damaged, so storage is easy, so a piece can be put away cleanly when not in use.
A product given as a gift enters the life of the person who receives it. It is used, touched, and changes over time. After it leaves the hands of the giver, the object continues to change. The patina of brass records the environment of the person who uses it.
When an object is passed from one hand to another, time is passed along with it. The giver may never know what comes after. But the object quietly accumulates that time.