Heart Container Locations
HEART CONTAINERS FOUND AS YOUNG LINK
Lon Lon Ranch - In the shed at the far end of Lon Lon Ranch, move the crates to reveal a hole in the wall. Crawl in and get the heart.
Dodongo's Cavern - Plant a magic bean at the entrance to Dodongo's Cavern. Return when you're adult Link and the stalk will take you up to a piece of heart.
Hyrule Field - The fenced in area leading to Lake Hylia holds a heart. Just plant a bomb in the middle of the area to reveal a secret grotto holding it.
Hyrule Field - North of Lon Lon Ranch there is a tree that seems out of place. Plant a bomb at the base of the tree to reveal another grotto with a piece of heart.
Kakariko Village - First scale Death Mountain to the top and meet the owl. He'll give you a ride back to Kakariko and drop you on top of a house. Drop down off the left end of the house and walk in the hole in the wall. There's a piece of heart next to the cow.
Kakariko Village - Play Dampe's gravedigging game to get the heart.(Hint - watch where the little boy stops to see where there treasures will be)
Kakariko Village - Plant a magic bean in the graveyard. Then return to that spot as an adult to retrieve a piece of heart.
Kakariko Village - Move one of the stones in the graveyard and jump in. Walk up to the wall and play the sun song. A chest will appear with a piece of heart.
Zora's River - Play the song of storms for the frogs.
Zora's River - Play all the songs you know for the frogs. When they all get full sized, you'll get another piece of heart.
Zora's River - Take the cucco at the entrance to the river and use it to fly to the large plateau. Then take the cucco that's up there and fly to the piece of heart.
Zora's River - Take the cucco from the entrance and bring it all the way to the entrance to Zora's Domain and fly to another piece of heart.
Market - Play the treasure chest game.(Hint - use the eye of truth to see through the chests)
Market - Play the bombchu bowling game until you win the piece of heart.
Market - At night when all the dogs are out, go to the dog that is behind a counter and bring it to the fat lady that lives in the alley way. She'll give you a piece of heart.
Lost Woods - Play Saria's song for the skull kid.
Lost Woods - Play along with the two other skull kids to get a piece of heart.
Zora's Domain - Light up all the torches in the domain. A chest will appear behind the waterfall with piece of heart.
Death Mountain Crater - Plant a magic bean at the entrance to Volvagia's cavern. Return as an adult and the stalk will carry you to the volcano in the middle where the piece of heart lies on top.
Goron City - Light up all the torches to make the big urn spin. Toss a bomb in it to get a piece of heart.(note: the heart piece doesn't appear unless the urn turns on a smile.
Lake Hylia - Play the fishing game and catch a 10 lb fish.
Lake Hylia - Plant a magic bean next to the lab. Return as an adult and get the heart piece on top of the lab.
Gerudo Valley - Take a cucco to the bridge and fly through the waterfall for a piece of heart.
Gerudo Valley - Take that same cucco again and fly to the ledge with the crate. A piece of heart is inside.
Spirit Temple - Plant a magic bean at the entrance to the temple. Return as adult Link to get the piece of heart on top of one of the rocks.
HEARTS FOUND AS ADULT LINK
Kakariko Village - Use your hookshot to get to the top of the house with the guy on top. He'll give you a piece of heart as a momento.
Kakariko Village - After you race Dampe, play the song of time. This will bring you to the windmill. Jump on the spinning wood thing and jump to the ledge with the heart.
Kakariko Village - Race Dampe a second time and achieve a time of less than 1:00 and he'll give you a piece of heart.
Kakariko Village - After gaining 50 gold skulltula's, return to the house of skulltula to receive a piece of heart.
Zora's Fountain - Jump along the ice blocks until you come upon one with a piece of heart. It should be on the right.
Zora's Fountain - With Zora's Tunic and the Iron Boots, sink to the bottom of the fountain for a piece of heart.
Ice Cavern - In the Ice Cavern there's a piece of heart inside a red crystal. Use the blue fire to melt it and get the heart.
Death Mountain Crater - Scale down the wall. There should be a little crevice with a piece of heart.
Lake Hylia - After getting the golden scale from the fishing game, dive to the bottom of the pool in the lab at Lake Hylia. The scientist will give you a piece of heart.
Gerudo Fortress - Use your hookshot to get to the chest atop the fortress wherein lies a piece of heart.
Gerudo Fortress - Ride Epona to the arrow shooting game. Score 1000 points to get a piece of heart.
I believe that's all of 'em. I did this by memory, so hopefully I didn't forget any.