The item to the left of the crossed-out Fairy is the Ring Box. In the Oracle games, you could find Rings that, when appraised at a specific shop, could be equipped to Link. You can imagine the Rings as a simplified version of the Badges from Paper Mario, they would do things like increase attack power at the cost of defense, or allow Link to punch enemies when he had nothing equipped. One would even replace his graphics with the ones from the original NES Legend of Zelda game. Anyways, the shop would keep a hold of your rings, and you could pick out one (or three, with the upgraded box) to carry with you. You could only equip one ring at a time, so you would have to carefully consider what effects would help you out most.
The blue and red rocks to the right of the crossed-out Fairy are Ore. In Oracle of Seasons, there was a second explorable world called Subrosia. Link's Rupees were worthless there, and in order to buy things at the shops, you had to use your shovel and dig up Ore. I suppose these could be used for replacement Rupee graphics, for a somewhat authentic use.
The next set that come to mind are the orb-shaped items at the very bottom, in pink. Starting from left to right, we first have a wrecking ball. I believe this is the one from Link's Awakening, Dungeon #7: Eagle's Tower. You picked it up with the Power Bracelet and threw it at four pillars in order to cause the floor above you to collapse and allow you to advance.
The orb with the "N" on it is a magnetic ball. In one of the Oracle games, you got an item called the Magnetic Gloves. You could use them to be pulled towards/pushed away from corresponding magnetic blocks (releasing the button would flip the polarity on the gloves for the next use, allowing some interesting puzzles), and you could pull these magnetic orbs towards and away from you. The letter on the object allowed you to see the polarity you needed to oppose it.
The two pearl-looking items to the right of the "N" ball were the completed Essences in the Oracle Games. Just like how Link's Awakening had the Magic Instruments, the Oracle games had the Essences of Ages/Seasons at the end of each dungeon. Once you had all of them, you would be given one of these pearls and it would allow you to complete the final level. Basically, you can use these as completed Triforce graphics (for when you battle Ganon and hold it up.)
The variety of items beneath the LA trade items are all trade items for the Oracle games, so you don't have to worry too much about those.
The pair of skulls above where you've labeled the LA trade items are animation frames for the same item, the Captain's Skull. You had to hold it up while traversing a desert, and the teeth would chatter the closer you were to an item you had to look for. Basically, it was a radar-type item that was held up with the Power Bracelets.
To the right of the crossed-out tunic is a Stone Beak, you could find them hidden in the dungeons in LA, and they would let you receive hints from the Owl Statues hidden around the same dungeon the beak was found in.
I don't recall what the odd-looking star is for, but I'm going to use it for a reference point to show some more items. To the immediate right of the star item is a Punching Glove. You found this to convince Ricky the Kangaroo to allow Link transport in his pouch.
The five tiny items to the right of the Punching Glove are, in order: Ember Seed (single-use lantern), Scent Seed (use as Slingshot/Seed Shooter ammunition to damage enemies, or drop them on the ground for the same effect as bait), Pegasus Seed (single-use temporary Pegasus Boot effect), Gale Seed (teleport Link to any seed tree on the overworld), and Mystery Seed (various special effects when used on some objects or bosses, random seed effect when used normally). The four shapes to the right of the seeds are gems that you had to use to open a sealed gate in Oracle of Seasons.
Above the four shaped gems is a rock that I don't quite remember what it was used for, but the three objects to the left are leaves used for cutscenes when the Mako Tree told Link where to go next.
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These are items I remembered after putting the list together...
After the Cutscene leaves on the list in this post, there are the individual Essences. I don't recall if these are the ones from Seasons or Ages, but you got one of these every time you finished a dungeon. You could use these for replacement Triforce Pieces.
In Oracle of Ages, you received the Harp of Ages, which let you learn three songs to manipulate time. The three symbols here represented each song when you selected the Harp in the equipment screen.
In Link's Awakening, you received an Ocarina. Again, you could learn three songs, the next set of symbols were the songs for this game.
EDIT: Just added some labeled pictures. These are everything I can think of off the top of my head right now.
Edited by kurt91, 22 March 2012 - 08:16 PM.