The Wolf Link amiibo is needed to even get to the place where the item is located. There is a third wallet upgrade in the game known as the Colossal Wallet that can be found only in the Cave of Shadows. You must have first acquired the first two wallet upgrades from the bug hunting sidequest before being able to get the Colossal Wallet. I recommend waiting till you have all the Heart Containers since you'll be running a huge gauntlet for this. Use the Wolf Link amiibo on the "Collection" screen during gameplay and choose to save the game and enter the Cave of Shadows. It will take three trips to get a shot at the Colossal Wallet and you'll be stuck in wolf form for the entire trip to the dungeon. Midna will not let you transform back cause you're required to do it in wolf form. After the first two trips to the Cave of Shadows you'll be able to go through the rest of the rooms to the end. Once you clear the last room drop down to find what will look like the same kind of cloud that the Great Fairy is enveloped in when you reached the special chambers in the Cave of Ordeals. Talk to the one there and you'll be given the Colossal Wallet for making it there. This wallet upgrade increases the max Rupee count to 9999.
Easy Ganon - Final Phase
Just as in the past releases of the game, you can use the fishing rod to distract Ganon during the last phase of the battle. When you get close to Ganon and use your fishing rod, his head will turn. He will then let you get a few free hits in with your sword without blocking. This can be done over and over again until you're able to get the final blow in.
Faster Mortal draw
If you roll towards an enemy then perform Mortal draw, Link will only do the last frames of the attack but it will still connect, making it quicker than if used normally. Doing it this way can bypass enemy shields.
Playable Cuccos
If you hit a Cucco ten times as Link in either his human or wolf form, you'll be able to control the chicken for several seconds. You can do this as often as you like.
The Mushroom Kingdom
Previous Zelda games have included nods to the Super Mario series, and this one is no exception. Pay especially close attention to Fyer, the clown-like fellow who operates a cannon in the Lake Hylia region. Examine his sleeve and you'll see the image of Bullet Bill, a popular enemy featured in Super Mario Bros. and many subsequent games in the series.
Zelda Artwork
You would of course expect to find plenty of Zelda-related art in The Legend of Zelda: Twilight Princess HD, what with it being an actual Zelda game. Less expected, however, is a special new painting (unique to this edition) that you can discover in Castle Town. Visit Chudley's shop in Hyrule Castle Town and check along the walls. You should find a painting that depicts the grassy Hyrule Field, as featured in early video footage of the upcoming Zelda title for Wii U.
Colossal Wallet...