I'm not sure whether you are talking about Ocarina of Time or Majora's Mask. Since all of the items you listed are in both of the two games. So I'll just go through both of them anyway.
Ocarina of Time:
For the C-Left, I usually put the Ocarina of Time there. I use it to play songs when I'm bored, to transport to different places around Hyrule and I just keep it there when I'm messing around. If I don't have the Ocarina of Time yet, I have the Fairy Ocarina from Saria there.
For C-Down I have either the Bow and Arrow (as adult Link) or the Fairy Slingshot (as young Link). If I have any enchantments for the Fairy Bow I have Fire Arrows or Ice Arrows out, since I really love those. I really need a ranged weapon and these two are good for me. The Fairy Bow being my favorite weapon in the game because of it's enchantments.
And finally, for C-Right, I have either the Longshot/Hookshot or the Megaton Hammer as an adult, and as a child, I have the Boomerang to collect heart pieces are other things. The Longshot/Hookshot is useful in dungeons and sometimes for reaching certain places and the Megaton Hammer is purely for fun. I like smashing enemies down with this baby.
For Majora's Mask:
In Majora's Mask I have the Ocarina of Time set in C-Left, like in The Legend of Zelda: Ocarina of Time. Like in OoT, I have it there for traveling purposes and for the other reasons I mentioned just before. If I am in a dungeon, I'd usually replace this with the dungeon item or a transformation mask.
For C-Down, I'd have the Bow just like in Ocarina of Time as well. I try to get as many arrows as possible, but I usually don't use enchantments because I like to save my magic as much as possible in Majora's Mask unless I am using Light Arrows to collect money. If I have a transformation mask out, it changes.
Lastly, for C-Right, I have the Bunny Hood. It is really helpful in Majora's Mask. It makes Link lightning quick which is a plus because of the time limit. I'm not really a fan of rolling around as a goron, because as I said before, I like to save magic until I need it most. If I have a Transformation Mask out I'd change this since none of the transformations can use the Bunny Hood. For Deku Link, I'd use the Ocarina of Time (since as I stated previously, I swap the Ocarina for Transformation masks), for Zora Link, I'd have the Ocarina as well. For Goron Link I'd use the Powder Kegs or again, the ocarina.