Force Ghost Luke being able to interact with physical objects and use the Force, Palpatine in particular doing three of these things (being revealed to have spoken in Kylo Ren's head in the voices of Snoke and Vader to corrupt him, draining energy from Rey and Kylo to heal his deteriorating body when Rey refuses to participate in his body transferring ritual , and unleashing a thunderstorm of Force lightning capable of disabling entire fleets), items being able to be transferred through spacetime communication (Kylo Ren stealing Rey's necklace from the desert world she visits, a duel across spacetime causing the deteriorated helmet of Darth Vader to fall from Kylo's quarters to the planet below where he is, and Rey using this to hand the redeemed Kylo a lightsaber while she refuses to undergo the above ritual), and the usage of Force Healing.