Whenever Nearly Headless Nick is floating still (and you have the Ghost Stud extra on), stand under him and he'll constantly give you ghost studs.

If you purchase and use the "Christmas" extra, the room you use it in will keep playing the same music for the rest of the game... Just like the red-haired Ron cheat, it will not revert back to its regular music.

In order to do away with the objects with red sparkles around them you have to use dark magic. In order to use dark magic you need to use the Polyjuice Potion (or use an evil character on freeplay -- e.g. Lord Voldemort, Tom Riddle or Barty Crouch Jr.). Evil characters' Wingardium Leviosa spell is changed to the Crucio curse (but works just the same as Leviosa) and can now destroy the red sparkly objects.

After completing the first two levels of the game, you should have enough LEGO Pieces access this Easter Egg. Go into the wizard town through the Leaky Cauldron, the last shop on the left (before the bank), sells custom spells. Purchase the spell called 'Multicorfors'(a spell that turns the characters into "gingers"). Cast it on Ron Weasley. Once cast, he will shake his head as if it has worn off, but his hair will not revert back to its natural color.

Find, post and purchase the "Collect Ghost Studs" extra. The parcel was either in Harry's bedroom or on the courtyard fountain (You will need to have learned the Leviosa spell first). Once activated the Ghost Studs are worth 1,000 each. "Get lost" the ghost will return to you and lay more studs -- it's easy money. A full trip from the Dorm to the Great Hall is worth about 100,000.

Head to the Wiseacres Wizarding Equipment in the Leaky Cauldron hub area. It can be found in Diagon Alley. You can enter the following codes upstairs for the desired effect.

Cheats

• AUC8EH - Carrot Wands
• H27KGC - Character Studs
• HA79V8 - Character Token Detector
• T7PVVN - Christmas
• 4DMK2R - Disguise
• J9U6Z9 - Extra Hearts
• ZEX7MV - Fall Rescue
• Z9BFAD - Fast Dig
• FA3GQA - Fast Magic
• 84QNQN - Gold Brick Detector
• TTMC6D - Hogwarts Crest Detector
• F88VUW - Ice Rink
• QQWC6B - Invincibility
• 7AD7HE - Red Brick Detector
• 89ML2W - Regenerate Hearts
• H8X69Y - Score x10
• 74YKR7 - Score x2
• J3WHNK - Score x4
• XK9ANE - Score x6
• HUFV2H - Score x8
• HZBVX7 - Silhouttes
• BMEU6X - Singing Mandrake
• 67FKWZ - Stud Magnet

Red Bricks

• AUC8EH - Carrot Wands
• H27KGC - Character Studs
• HA79V8 - Character Token Detector
• T7PVVN - Christmas
• J9U6Z9 - Extra Hearts
• Z9BFAD - Fast Dig
• FA3GQA - Fast Magic
• 84QNQN - Gold Brick Detector
• TTMC6D - Hogwarts Crest Detector
• F88VUW - Ice Rink
• QQWC6B - Invincibility
• 7AD7HE - Red Brick Detector
• 89ML2W - Regenerate Hearts
• HZBVX7 - Silhouettes
• BMEU6X - Singing Mandrake
• 67FKWZ - Stud Magnet

Gold Bricks

• QE4VC7 - Gold Brick 01
• FY8H97 - Gold Brick 02
• 3MQT4P - Gold Brick 03
• PQPM7Z - Gold Brick 04
• ZY2CPA - Gold Brick 05
• 3GMTP6 - Gold Brick 06
• XY6VYZ - Gold Brick 07
• TUNC4W - Gold Brick 08
• EJ42Q6 - Gold Brick 09
• GFJCV9 - Gold Brick 10
• DZCY6G - Gold Brick 11

Spells

• VE9VV7 - Accio
• QFB6NR - Anteoculatia
• 6DNR6L - Calvorio
• 9GJ442 - Colovaria
• CD4JLX - Engorgio Skullus
• MYN3NB - Entomorphis
• ND2L7W - Flipendo
• ERA9DR - Glacius
• H8FTHL - Herbifors
• YEB9Q9 - Incarcerous
• 2M2XJ6 - Locomotor Mortis
• JK6QRM - Multicorfors
• UW8LRH - Redactum Skullus
• 2UCA3M - Rictusempra
• U6EE8X - Slugulus Eructo
• UWDJ4Y - Stupefy
• KWWQ44 - Tarentallegra
• YZNRF6 - Trip Jinx

Additions by Zee and Calum