Just for reference, here's a list of what appears to be all the new hold items for battles.
Terrain Extender -- An item to be held by a Pokémon. It extends the duration of the terrain caused by the holder’s move or Ability.
Protective Pads -- An item to be held by a Pokémon. These pads protect the holder from effects caused by making direct contact with the target.
Electric Seed -- An item to be held by a Pokémon. It boosts Defense on Electric Terrain. It can only be used once.
Psychic Seed -- An item to be held by a Pokémon. It boosts Sp. Def on Psychic Terrain. It can only be used once.
Misty Seed -- An item to be held by a Pokémon. It boosts Sp. Def on Misty Terrain. It can only be used once.
Grassy Seed -- An item to be held by a Pokémon. It boosts Defense on Grassy Terrain. It can only be used once.
Adrenaline Orb -- Using it makes wild Pokémon more likely to call for help. If held by a Pokémon, it boosts Speed when intimidated. It can be used only once.
Silvally Memories:
Fighting Memory -- A memory disc that contains Fighting-type data. It changes the type of the holder if held by a certain species of Pokémon.
Flying Memory -- A memory disc that contains Flying-type data. It changes the type of the holder if held by a certain species of Pokémon.
Poison Memory -- A memory disc that contains Poison-type data. It changes the type of the holder if held by a certain species of Pokémon.
Ground Memory -- A memory disc that contains Ground-type data. It changes the type of the holder if held by a certain species of Pokémon.
Rock Memory -- A memory disc that contains Rock-type data. It changes the type of the holder if held by a certain species of Pokémon.
Bug Memory -- A memory disc that contains Bug-type data. It changes the type of the holder if held by a certain species of Pokémon.
Ghost Memory -- A memory disc that contains Ghost-type data. It changes the type of the holder if held by a certain species of Pokémon.
Steel Memory -- A memory disc that contains Steel-type data. It changes the type of the holder if held by a certain species of Pokémon.
Fire Memory -- A memory disc that contains Fire-type data. It changes the type of the holder if held by a certain species of Pokémon.
Water Memory -- A memory disc that contains Water-type data. It changes the type of the holder if held by a certain species of Pokémon.
Grass Memory -- A memory disc that contains Grass-type data. It changes the type of the holder if held by a certain species of Pokémon.
Electric Memory -- A memory disc that contains Electric-type data. It changes the type of the holder if held by a certain species of Pokémon.
Psychic Memory -- A memory disc that contains Psychic-type data. It changes the type of the holder if held by a certain species of Pokémon.
Ice Memory -- A memory disc that contains Ice-type data. It changes the type of the holder if held by a certain species of Pokémon.
Dragon Memory -- A memory disc that contains Dragon-type data. It changes the type of the holder if held by a certain species of Pokémon.
Dark Memory -- A memory disc that contains Dark-type data. It changes the type of the holder if held by a certain species of Pokémon.
Fairy Memory -- A memory disc that contains Fairy-type data. It changes the type of the holder if held by a certain species of Pokémon.
Z-Crystals
Normalium Z -- It converts Z-Power into crystals that upgrade Normal-type moves to Normal-type Z-Moves.
Firium Z -- It converts Z-Power into crystals that upgrade Fire-type moves to Fire-type Z-Moves.
Waterium Z -- It converts Z-Power into crystals that upgrade Water-type moves to Water-type Z-Moves.
Electrium Z -- It converts Z-Power into crystals that upgrade Electric-type moves to Electric-type Z-Moves.
Grassium Z -- It converts Z-Power into crystals that upgrade Grass-type moves to Grass-type Z-Moves.
Icium Z -- It converts Z-Power into crystals that upgrade Ice-type moves to Ice-type Z-Moves.
Fightinium Z -- It converts Z-Power into crystals that upgrade Fighting-type moves to Fighting-type Z-Moves.
Poisonium Z -- It converts Z-Power into crystals that upgrade Poison-type moves to Poison-type Z-Moves.
Groundium Z -- It converts Z-Power into crystals that upgrade Ground-type moves to Ground-type Z-Moves.
Flyinium Z -- It converts Z-Power into crystals that upgrade Flying-type moves to Flying-type Z-Moves.
Psychium Z -- It converts Z-Power into crystals that upgrade Psychic-type moves to Psychic-type Z-Moves.
Buginium Z -- It converts Z-Power into crystals that upgrade Bug-type moves to Bug-type Z-Moves.
Rockium Z -- It converts Z-Power into crystals that upgrade Rock-type moves to Rock-type Z-Moves.
Ghostium Z -- It converts Z-Power into crystals that upgrade Ghost-type moves to Ghost-type Z-Moves.
Dragonium Z -- It converts Z-Power into crystals that upgrade Dragon-type moves to Dragon-type Z-Moves.
Darkinium Z -- It converts Z-Power into crystals that upgrade Dark-type moves to Dark-type Z-Moves.
Steelium Z -- It converts Z-Power into crystals that upgrade Steel-type moves to Steel-type Z-Moves.
Fairium Z -- It converts Z-Power into crystals that upgrade Fairy-type moves to Fairy-type Z-Moves.
Pikanium Z -- It converts Z-Power into crystals that upgrade Pikachu’s Volt Tackle to an exclusive Z-Move.
Decidium Z -- It converts Z-Power into crystals that upgrade Decidueye’s Spirit Shackle to an exclusive Z-Move.
Incinium Z -- It converts Z-Power into crystals that upgrade Incineroar’s Darkest Lariat to an exclusive Z-Move.
Primarium Z -- It converts Z-Power into crystals that upgrade Primarina’s Sparkling Aria to an exclusive Z-Move.
Tapunium Z -- It converts Z-Power into crystals that upgrade the tapu’s Nature’s Madness to an exclusive Z-Move.
Marshadium Z -- It converts Z-Power into crystals that upgrade Marshadow’s Spectral Thief to an exclusive Z-Move.
Aloraichium Z -- It converts Z-Power into crystals that upgrade Alolan Raichu’s Thunderbolt to an exclusive Z-Move.
Snorlium Z -- It converts Z-Power into crystals that upgrade Snorlax’s Giga Impact to an exclusive Z-Move.
Eevium Z -- It converts Z-Power into crystals that upgrade Eevee’s Last Resort to an exclusive Z-Move.
Mewnium Z -- It converts Z-Power into crystals that upgrade Mew’s Psychic to an exclusive Z-Move.
Pikashunium Z -- It converts Z-Power into crystals that upgrade a Thunderbolt by Pikachu in a cap to an exclusive Z-Move.
Complete list of all items added to the Sun/Moon spreadsheet (Items tab):
https://docs.google.com/spreadsheet...k0FCRAx51xVkuOlcWaJk1zPvE/edit#gid=1598860739