The Amulet of Calculated Promotion was added in the Alpha v0.12 update and is the first Easter egg item to be added to the game. Twitch streamer witwix has promoted Melvor Idle on his stream by discussing the game with his community, leading to an increase in active players. The amulet was added as a response by the developer to show his appreciation for this promotion. The amulet is obtainable by changing your character name to "witwix" (case sensitive) and opening the Chest of Witwix, which is dropped by Leeches. The chest will always contain the Amulet of Calculated Promotion if your character name is witwix.
Clue Chasers Insignia
Bank layout to obtain Clue Chasers Insignia.
The Clue Chasers Insignia was added in the Alpha v0.14 update and was teased with a clue which requires metagaming to solve. The clue for how to obtain the amulet was left in the patch notes:
"The Numbers, mason, What do they mean?!"
The clue is a red herring reference to a cutscene from the game Call of Duty: Black Ops. The numbers important for solving the clue come from the TV show Lost, which uses the numbers 4, 8, 15, 16, 23, and 42, as apart of the shows mythology. The numbers correspond to the 'item ID' of items in Melvor Idle, 4 is Maple Logs, 8 is Redwood Logs, 15 is Raw Swordfish, 16 is Raw Crab, 23 is Herring, and 42 is Burnt Cave Fish. These items must be manually placed in the aforementioned order, so that the first 6 slots of your Bank contain them. The items must also have a specific quantity, which is discovered by reversing the number sequence. The correct order and quantity of items is shown below.
Once the items have been moved to the first 6 slots of your Bank in the correct order and quantity, the Clue Chasers Insignia will be automatically awarded to you. If you already have a Clue Chasers Insignia in your bank, or the order/quantity of items is wrong, you will not receive the amulet. If the amulet is equipped, sold or lost, the amulet can be obtained again using the same method.
69(lol)
"69(lol)" is a Farming easter egg where "(lol)" is added next to every instance of 69 appearing on the Farming page. Whenever Snape Grass, Carrots, or other high wait time seeds are planted the information tile will read "Time Left: About 69(lol) mins" remaining. This Easter egg was added in the Alpha v0.12 update, which made changes to the Farming UI.
Golbins
Prior to patch version Alpha v0.13, some of the creatures were erroneously named Goblin, which is a creature from European folklore, used most commonly in fantasy settings today. Patch Alpha v0.13 changed all creatures named Goblin to Golbin, which is the developer's unique spin on the Goblin archetype.
wherearemylemons
Using "wherearemylemons" to add Lemons to the bank.
Typing "wherearemylemons" into the Bank search will now give you a Lemon. Lemon, Lemons, and Lemonade are joke items added in the April Fools 2020 Event, v0.14.69.