Near the beginning of the Desert level, stand slightly to the left of the Mickey Mouse ears. After a short while, Aladdin will to his head stretch to look thing, and his head should line up directly under the ears so it looks like he's wearing them.
An extra life will appear above the clothesline.
Note: This can only be performed once per game.
In the start of one of the levels (2nd I think) there should be a line of clothes, if you go under the one with underwear that looks like mickey mouse's ears (go under it as to look like mickey) there will be items back at the start of the level which weren't there before.
Note: I haven't played this in a while
Press A,C,A,C,A,C,A,C B(4) at the options screen, then cheat options will appear if you did it right.
While game play pause and press A, A, B, B, A, A, B, B, A, A.
Press L1 + L2 + R1 +R2 + Select + Start during game play. The game will restart from the main menu.
You will come across a pillar which has a picture of Goofy on, if you jump while behind it, you will fly upwards into a secret shop.
During gameplay, pause and click: A, B, B, A, A, B, B, A.