Trinkets

Gravedigger Items are Items that can be found by digging up Graves with a Shovel, which causes Sanity loss of 10, or gnawing them open with Woodie in Werebeaver mode, which doesn't cost Sanity.

Most of the items retrieved are "Trinkets", which can be traded to the Pig King for 2-8 Gold Nuggets, but you can also get Gears, a Blue Gem, a Red Gem, a Life Giving Amulet or Nightmare Fuel. 10% of the time, digging up a grave will spawn a Ghost instead of giving an item.

Trivia

 * The need for Gears to craft the Ice Box means it is often ranked amongst the most important items in the early game.
 * Gord's Knot is a reference to the the well-known myth of Alexander the Great and the Gordian Knot (named for the Phrygian king Gordias). In the most common form of the myth, an oracle had prophesied that whoever could unbind an impossibly tangled knot and release the tethered cart would rule all of Asia. Upon seeing the great mass of tangled rope, Alexander drew his sword and sliced through the rope, unbinding the cart by cutting the knot. He later went on to conquer much of Asia, fulfilling the prophecy. It has since become a metaphor for solving a complex problem with a simple solution by thinking outside of the box, twisting the rules and/or cheating.
 * The belief stated by Wilson and Wickerbottom that the Gnome is a religious artifact is not too far from the truth. A Gnome's original purpose was to protect the garden from evil sprits, which is probably why it goes with the Evil Flowers and the Box Thing in the setpiece.
 * Contrary to popular rumour, placing a Gnome by a Pond will not result in it pulling out a Fishing Rod and casting it out.
 * WX-78 claims the Lying Robot's name is 'HAL', and is his friend. The name 'HAL' is a reference to a murderous supercomputer named HAL 9000 in the movie 2001: A Space Odyssey. The 'Lying' part of the robot's name is almost certainly because HAL 9000 was required to keep a secret, yet also be truthful at all times, causing a paradox which caused the computer to go mad.
 * The Tiny Rocketship is a reference to the comic book Destination Moon (Tintin).
 * Under the old research method, Gravedigger items were one of the best ways of gaining research points.
 * Dessicated Tentacles can be used for tentacle rapes.