DD69-07A0 Start with 1 life instead of 3
D169-07A0 Start with 7 lives
DB69-07A0 Start with 10 lives
C22B-ADA5 Infinite lives
C2E7-D462 Protection from most hits (lose no hearts)--switch off if you get stuck
C23E-6405 Infinite magic--wizard's costume only
DFE7-0708 Each gold coin worth 10 (if you pick up too much, you may go back to 0) 
C23D-6FA0 Longer invincibility after getting hit (Mickey blinks)
CB3D-6D60 No invincibility after getting hit
1B2D-6765 + 4A2D-67A5 Super jump
1B2D-6765 + 4D2D-67A5 Mega jump
1B2D-6765 + F02D-67A5 Leap tall buildings in a single bound
6DE6-04A8 + 48E6-07D8 Items in general store are free if you can afford them 
DFAE-D4D7 Start with 1 heart instead of 3
D9AE-D4D7 Start with 5 hearts
D5AE-D4D7 Start with 7 hearts
DCAE-D4D7 Start with 10 hearts
622F-DDD6 + C22F-DF06 Small heart fills health meter completely