I used to have a hobby of making possible zelda plots, so here goes.

Harpoon: I know some have already said this before, but like a metal arrow that you have supplies on.

Shuriken: Zelda originated in Japan, why not add shuriken?

Swords of Courage, Wisdom, Power: In my game, I felt like I wanted to add 2 player possibilities, so I chose dual swords. Each person would control one sword. After beating each Dark boss (Dark Link, Controlled Zelda, Beast Ganon), you would get the Sword of the respective triforce. Double jumping aerial, Double range spin attack, advanced backslice, stuff like that.

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