LEGO Harry Potter: Years 1-4 - Grand Staircase & Surrounding Areas FREE ROAM (All Collectables)

Welcome everybody to my LEGO Harry Potter: Years 1-4 guide series, where I'll be covering everything there is in LEGO Harry Potter: Years 1-4, including story completion, free play collectables, and everything else!
This one will cover the Grand Staircase, including the Muggle Studies Classroom and Dumbledore's Office as well, in Free Roam, which will focus on all the Gold Bricks, Character Tokens, Red Bricks, and Students in Peril within the area!
Below are video links for each collectable, which can be used to fast forward to specific collectables:
Grand Staircase Collectables:
Gold Brick 1 - 0:58
Student in Peril 1 - 2:19
Character Token 1 (Professor Binns) - 2:29
Character Token 2 (Percy (Sweater)) - 2:38
Muggle Studies Classroom Collectables:
Character Token 3 (Dudley Dursley) - 2:57
Character Token 4 (Mr Mason) - 3:15
Character Token 5 (Mrs Mason) - 3:29
Gold Brick 2 - 3:43
Red Brick 1 (6x Stud Multiplier) - 4:35
Dumbledore's Office Collectables:
Character Token 6 (Nearly Headless Nick) - 4:58
Gold Brick 3 - 5:43
Red Brick 2 (Invincibility) - 5:52
Character Token 7 (Professor Dumbledore (Grey)) - 6:13
Character Token 8 (Professor Dumbledore) - 7:35
A link to the video of how to unlock Tom Riddle:
• LEGO Harry Potter: Yea...
A link to my full LEGO Harry Potter: Years 1-4 playlist:
• LEGO Harry Potter: Yea...