Pause the game and choose "Extras". Then enter the following codes for the desired effect.

Password	Effect
2FLY6B	Collect Ghost Studs
74YKR7	Score x2
7AD7HE	Red Brick Detector
84QNQN	Gold Brick Detector
AUC8EH	Carrot Wands
H27KGC	Character Studs
H8X69Y	Score x10
HA79V8	Character Token Detector
HUFV2H	Score x8
J9U6Z9	Extra Hearts
QQWC6B	Invincibility
TTMC6D	Hogwarts Crest Detector
XK9ANE	Score x6
Z9BFAD	Fast Dig
ZEX7MV	Fall Rescue