• Artefacts: Collectible loot treasures with various forms.
• Snapper Root: A drop from Snappers.
• Stalker Eye: A drop from Stalkers.
• Sword of Legends: A powerful sword obtained after killing the Prime Wight.
• Armor of Legends: Powerful armor obtained after killing the Prime Wight.
• Kraken Calamari: Obtained by cooking Kraken Tentacles.
• Kraken Tentacle: Obtained from the Swamp Kraken.
• Elder Staff: A drop from the Tribal Elder that lets you set spawn point.
• Eye of the Middle: An item used to find the Prime Wight's Domain.
• Glowing Jelly: A drop from both variants of Jellyfish.
• Glowstick: Items that can be thrown to provide light, even while underwater.
• Idols: Items of great value found in Ancient Temples, with three variants.
• Needler Root: A drop from Needlers.
• Phantom Bow: A rare bow capable of shooting four additional arrows at once.
• Pyrad Shield: A special equippable item that provides protection from three sides.
• Pyrad Staff: A very rare item that allows one to adjust the length of a Betweenlands day.
• Scout (item): An 'equippable' entity that can be used to scout ahead of the player.
• Shadow Staff: A unique item capable of dragging and throwing mobs.
• Spirit Fruit: Special fruit obtained from Spirit Trees.
• Tribal Pants: An armor drop from Tribals.
• Tribal Spear: A weapon drop from Tribal Guards that can be thrown.
• Whip: A tool that can reel similarly to a fishing pole, but is not used for fishing.

This is just my opinion, but a staff that changes something worldwide like the day night cycle shouldn't drop from something like a pyrad, which is a semi common mob. Maybe it could somehow be obtained from the spirit tree?

Glowstick...What about, reusing a Deep water corail block like a TNT block? Once powered, it is replaced by a falling entity. After 3sec, the entity is replaced again by the previous block?
Like a Jack O Lantern who could sink them place by itself?