Jedi Holocron

From Multiversal Omnipedia

The Jedi Holocron was an artifact- which appears as a small, palm-sized, glowing cube of crystalline formations and hardware, with curious designs etched into its technological components- was created by ancient Jedi teachers, presumably as an aid and as a record. For true Jedi Knights, the Holocron can create hologrammatic images that are recordings of ancient Jedi teachings. True Jedi Knights can also interact with the images.