Side Quests and other Lose Ends (Optional)
The Deku trading game consists of brining the tear drop to the Deku in Clock Town, then the map he gives you to other Deku. Take his map to the Deku in the swap by the first witch hut. Talk to the Deku as link and get the next. Take that one to the Deku outside Goron Village as Deku Link. Take the map he gives you to the Deku inside a house at the Zora Hole for another map. You will need the Garo mask to trade the last map. Win the Garo mask at the horse races on the ranch on Milk Road. Just ride Epona into the ranch, and pay 10 rupees to race against the 2 guys who are there. Wear it, and look for a hooded figure on the cliff by the graveyard area. He will make a tree you can use your Hookshot to grab onto, and you can get to the last Deku as Zora Link. Go down the path, watching for rocks and rogue Goron. when you get to the Ikana area, walk along the ledge without going in the water and you will be attacked by a robed-figure. He is an easy kill. Continue on and you will find the last Deku, and get a 200 rupee bonus. There are heart container pieces after each of these Deku.

The 5th Bottle can be gotten in the Great Bay area, on the map where the entrance to the Zora Hole is. There is a cave to goto above the waterfall in that area, the one where you got a heart piece for killing the monster at the bottom. To get to the top, you must back track to the part where there is what looks to be a dead branch on the beach. Jump on that, and look for a small tree above to shoot with the hookshot. Shoot the next tree, and so on until you get to the cave. You will need to go through beaver races where you have 2 minutes to go through 20 rings as Zora Link. When you complete that race, you will have 25 rings on a different course to go through. After that race, you are awarded the 5th Bottle Item.

Around the Ikana Graveyard and the hooded guy on the cliff, there is a circle of stones. Look at this circle with the Lens of Truth and you will see an injured warrior. Bring him medicine to help him recover, and he will give you the Stone Coro Mask as a prize.