During the Light World fight with Agahnim, he turns into a shadow, and moves around like that. If you bring up the map exactly when he is turning from shadow to real form, his colors will be really distorted, or he will look transparent, just like the 2 fake ones during the second fight. If you keep doing it, his colors will keep changing.
After you get all the statues from completing the riddles go into your house and select the magic powder. Sprinkle it on the statues and they will sparkle. Sprinkle magic powder on them again to get them in color. Sprinkle them one final time to get Bunny Link, skinless chicken, and Zelda as an old lady.
After you've gotten the Power gloves go to the desert area in the game. Once there find the man thats sitting next to his sign. Go a little bit south and to the left where you should find two large rocks. Lift up the rock below the top one and a secret area will be opened. Once inside you'll notice a thief and 10 different pots that each hold a blue rupee, break open each pot and take all the money. You'll be able to do this as much as you please because the blue rupees come back every time you leave and reenter the area. It should only take a few minutes to get the maximum amount of rupees.
In the light world, go to where you recieved the flute. Go down one screen. To the right where there are two trees. Stand next to the top tree and use the Ether medalion. Walk away from the tree and ram into it with Pegasus Boots and a head like Blind in her human-ish form will fall down and explode as if it were a bomb.
Once you've gotten the super bomb and already blew up the wall blocking the dark worlds fairy go inside and make sure you have at least one empty bottle with you. Go up to the Mysterious pond and it will ask you to throw something in. Scroll through your items until you come across an empty bottle, then throw it in the water. The Fairy will come out and ask you if you droped it. Answer yes and the fairy will say she likes such an honest person and will fill your bottle with green potion. You can do this as many times as you want.
After you get the Zora flippers, find the big waterfall in the light world. It should be near the area where you got the flippers. Once you see the waterfall walk right into it and you'll be able to go inside of it. Once your inside you'll see a pond and it will ask you to throw something in. Choose to throw your small shield in and a fairy will ask if it is yours. Answer "YES" and she'll give you a red shield.
On any part of the Light World Death Mountain that is on top of the mountain (level with the Tower of Hera, or Mountain Tower) freeze one of the tekktites (those blue or red spidery jumping things) with the ice rod (the Ether Medallion will just kill it) and pick it up using the power glove. not jump off the edge of the mountain that leads to the ground level. The tekktie will suddenly disappear and when you land on the ground you will be holding thin air and you will walk at normal speed with nothing weighing you down. The only problem is, you can't use any items, including your sword, shield or pegasus boots, and you cant throw away the air that you're holding. The only way you can stop this is by entering a cave or by getting hurt. you can also pick up a green stone and do the same thing, but I can't guarantee it will work. Sometimes you may have to repeat the trick several times in order for the item you're holding to disappear. You can also do this in the Dark World Death Mountain where you enter the portal near Spectacle Rock. Pick up a flower, and jump off the cliff. In the Dark World it doesn't work that much, but if you try again it will work.
In the Light World, go south of Link's house into the swamp. There you will find a blue rabbit jumping up and down in the grass. When it jumps up, cut up the grass below it, then when it comes down, go over to it and touch it. It will give a random item, such as 1 to 300 rupees, or a fairy. This can only be done before you reach the Dark World for the first time.
Go to the cave with the Ice Rod, and go into the non-secret entrance, not the one leading to the Ice Rod. Dash into the statue at the end of the passage, and a Golden Bee will pop out. Catch it, and take it to the guy who refuses to sell you the Golden Bees. He will say that they are not as rare as he thought they were and will begin selling Golden Bees.
Go to the Treasure chest shop in the dark world in the Village of Outcasts. In the very back of the house, a picture of mario is hanging on the wall.