Sith chalice
From Wookieepedia, the Star Wars wiki.
Sith chalices were used by the ancient Sith as incense burners in ancient meditation rituals. One such chalice was part of Supreme Chancellor Palpatine's private art collection, a Sith artifact hidden in plain sight as a common piece of art. It was uncovered by the Wolhanian expedition of archaeologists from the Massassi ruins of Yavin 4 and probably acquired for Palpatine by Mas Amedda. Its contents were unknown to anyone but the Sith Lord.
