The internet is abuzz with what Kyber crystals may mean for Rey in Star Wars: The Last Jedi. Kyber crystals, for those not in the know, are the small Force-driven crystals that power lightsabers, bonding Jedis to their lightsaber. Show off your Star Wars in-the-knowhow with this Star Wars Episode 8 Rey Crystal Tassel Keychain, featuring a silver-and-gold-tone Rebel Alliance badge and black PU leather fringed tassel charm dangling from a gray Kyber crystal on a gold-tone keyring.