Key Items

Key Items are items which allow you to progress through the game in some form.

Technically, these items split into "Items" and "Key Items"; regular Items are only available within the level they're obtained while Key Items carry over to other maps and are exclusively for opening new hubs. All items have icons visible in the pause menu while in possession.

This can include gaining access to Hubworlds, Gold Tokens and babies.

Key Items List

Hub	Level	Item Icon	Item	Item Type	Obtained...	Used for...
Fur Fighter Village	Hub	DC, PC and iOS Viggo's Revenge	Subway Token	Key Item	at the beginning of the game	unlocking New Quack City
	Undermill				after basics (DC)
New Quack City	Hub	DC, PC and iOS Viggo's Revenge	Entry Permit		after saving Gwynth	unlocking Beaver Power
	World Quack Centre	DC, PC and iOS Viggo's Revenge	Plug x4	Standard	in the pool room	flooding the pool, to access open vent
	Lower East Quack	DC, PC and iOS Viggo's Revenge	Dime		by winning the Hoops minigame	taxi ride across draw bridge
	Quackenheim Museum	DC, PC and iOS Viggo's Revenge	Coat Stub		by dropping wheeled shelf from second floor	rescuing Alexander after destroying the Status to Continuous Forms of Uniqueness in Time
		DC, PC and iOS Viggo's Revenge	Exhibition Key		by connecting magnetized meterorites	opening the exhibit room, to rescue Xuan
Beaver Power	Hub	DC, PC and iOS Viggo's Revenge	Degree in Astrophysics	Key Item	after saving Juanita	unlocking Cape Canardo
	Furry Forest (VR only)		Detonator Handle	Standard	by lighting all four lanterns to drive the fireflies away from the Boss Beaver	blasting a cliff open, to rescue Jenny
			Engine Part x2		by blasting a crate under a boat's propeller turning a boat upright	operating boats, to rescue Dima to rescue Feyd
	Compound Factions	DC, PC and iOS Viggo's Revenge	Starter Handle		from the back of the first machine	operating the second machine, to rescue Mary
		DC, PC and iOS Viggo's Revenge	Set Square		inside the explosives warehouse	getting a Safety Certificate from a Boss Beaver
		DC, PC and iOS Viggo's Revenge	Safety Certificate		from a Boss Beaver after returning his Set Square	getting past the gate to Storage Compound A
	God Machine Valley	DC, PC and iOS Viggo's Revenge	Union Pass		by winning the Arm wrestle minigame	halting God of Crushers, to rescue Barrie
Cape Canardo	Hub		Bull Whip	Key Item	after saving Claude	unlocking Anatat Tatanatat
	VAB Building	DC, PC and iOS Viggo's Revenge	Toast	Standard	reflecting a beam into the toaster	getting past the Security Guard Duck
		DC, PC and iOS Viggo's Revenge	Unformatted Floppy Disk		from the shuttle after docking it onto the transporter	formatting it with the supercomputer
		DC, PC and iOS Viggo's Revenge	Formatted Floppy Disk		from the supercomputer after formatting	opening the transporter cockpit, to rescue Bonnie, Gregory and Jeremy
	VLF Facility		Four Leafed Clover		from the swamp, inside the hydroponic dome	encouraging the Astronaut Ducks, to get past the bus gate
			Lucky Rabbit's Foot		after escaping the shuttle launch after rescuing Sophie
			Lucky Elastic Band		by destroying the Scientist Duck's invention
	Space Station Meer		Oxygen Bottle x4		inside the snowy hydroponic dome after the hydroponic dome, near Tweek's telepoint under the reactor before the alien room, above the service robot	opening the depressurized room, to rescue Kylie and Edward
			Print Out		in the telescope room, after looking at the notes	opening a sealed room, to rescue Josie
Dinotopolis	Hub		Fedora	Key Item	after saving Esmerelda	unlocking Anatat Tatanatat
	Dinos Upstairs		Battery	Standard	on the Dinos boy's bed after destroying the box with a toy tank	having a miniature God of Drilling create a hole into the aquarium, to rescue Esteban
Anatat Tatanatat	Jungle of Despair		Raft Sail		on Robinson's island	finishing Robinson's raft, to rescue Howard
			Raft Rudder		in a water cave near Robinson's island
			Fragrant Orchid		in the Elephant Graveyard	for the Witch Doctor Beetle's potion, to rescue Ling
			Ancient Skull		within a hidden island temple, where Pippa is located
			Beetle x3		in the tree house within the hydrogen bomb after giving up Fragrant Orchid and Ancient Skull to the Witch Doctor Beetle under the collapsing bridge
	Temple of Gloom		Silver Mold		past the molding room	creating the Silver Key in the molding room
			Silver Key		from the molding room after placing the Silver Mold	opening the silver door to the Temple Maze
			Idol		within the Temple Maze	replacing the Sandbag behind the gold door
			Gold Mold			creating the Gold Key in the molding room
			Gold Key		from the molding room after placing the Gold Mold	opening the gold door within the Temple Maze
			Sandbag		behind the gold door within the Temple Maze, after placing the Idol	keeping the door to the windy opening, before the silver door, open
			Spanner Mold		above the crushing ceiling behind the gold door	creating the Spanner in the molding room
			Spanner		from the molding room after placing the Spanner Mold	locking the stairs near the start, to create a shortcut
	The Bad Place		Key to Nowhere		from the Bad Beaver after lighting all 4 torches to draw the Imps away	opening the Door to Nowhere
			Dynamite x2		in Roofus's nightmare, inside buildings	blowing up a bridge to stop the first tank blowing up the second tank
Viggo A Gogo	H.M.S. Viggolina		Stateroom Key		at the top of the carrier	opening the stateroom, to access Friendly Fire Lock Codes
			Friendly Fire Lock Codes		inside the stateroom	unlocking a cannon to destroy 3 aircraft
	The V-100		First Mate's Key		before/after winning the Sonar Steering minigame	unlocking the safe on the bridge
			Captain's Key		after winning the Proximity Alert minigame
			Torpedo Launch Codes		after opening the safe on the bridge	launching a torpedo, completing the level
	Secret Island		Cage Key 1 Cage Key 2 Cage Key 3 Cage Key 4		after defeating Uber Bear after defeating 31st Century Fox after defeating Odebah Bear after defeating Oddfelt	stopping the countdown inside the cage

For the category of individual items, including unused ones, go here.