Here’s what the main items in Granny do, grouped by purpose. The game has many items, but most fall into a few clear categories: escape-route items, puzzle items, and items used to distract or fight Granny.

Main door items

These are the items tied to unlocking the front door or its locks.

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ItemUse
Cutting Pliers / Chain CutterUsed on certain locks/wires for the main door and escape routes.
HammerUsed for the main door and some breakable boards/objects.
Master KeyOpens the final main door lock.
Padlock KeyOpens a padlock on the main door.
Padlock CodeUsed for the main-door code lock.
BatteryNeeded for some main-door lock setups in certain difficulties/settings.
ScrewdriverUsed on main-door-related screws/locks in some modes.

Car escape items

These are the parts needed if you want to escape using the car.

  • Car Battery.
  • Car Key.
  • Engine Part.
  • Gasoline Can.
  • Spark Plug.
  • Wrench.

The guide source says these parts are used to repair and start the car, then drive away.

Escape pipe items

A separate escape route uses the pipe escape, and these items are tied to that path.

  • Chain Cutter.
  • Rusty Padlock Key.
  • Wooden Stick.

Combat and defense items

Some items let you stun, defend against, or attack Granny.

  • Crossbow / Tranquilizer Darts.
  • Shotgun / Shotgun Ammo.
  • Freeze Trap.
  • Pepper Spray.
  • Gasoline Can, in some attack/defense uses.
  • Flashlight, on PC only, according to the item list.
  • Explosive Bauble.
  • Freezing Bauble.

Lure items

These items are not mainly for solving puzzles, but for distracting Granny.

  • Grey Vase.
  • Blue Vase.
  • Note.
  • Teddy.
  • Dead Rat.

Puzzle items

These are the “use them somewhere specific” items that unlock safes, doors, or hidden areas.

Examples include:

  • Safe and box items.
  • Crow distractions.
  • Hidden-room and lever puzzles.
  • Photo fragments and other collectible puzzle pieces.

A few useful examples

  • The Hammer is often used to break or remove boards and help open access routes.
  • The Crossbow can be used to stop Granny briefly and also help reach other items.
  • The Teddy Bear has a special use tied to an alternate ending, according to the guide.

The exact item list can vary a bit by version, difficulty, and settings, but the core idea is the same: some items unlock escapes, some solve side puzzles, and some help you survive Granny’s attacks.

If you want, I can also turn this into a full item-by-item list in a clean table.