Trading
in order of walkthrough

Keaton Mask



Borrow it in Happy Mask Shop at Market after you talked to the soldier north end of Kakariko and sell it to that soldier.

Skull Mask



Borrow it in Happy Mask Shop at Market after you sold the Keaton Mask, use it to raise your maximum of Deku Sticks, and sell it to the Kid in Lost Woods, left from entrance.

Spooky Mask



Borrow it in Happy Mask Shop at Market after you sold the Skull Mask, and sell it to the kid that plays during the day at Graveyard.

Bunny Hood



Borrow it in Happy Mask Shop at Market after you sold the Spooky Mask, and sell it at night to the guy running around south of Lon Lon Ranch after you are done with Lord Jabu Jabu.

Mask of Truth



Get it in Happy Mask Shop at Market, after you sold the Bunny Hood.

Pocket Egg



Get it from the chicken girl in Kakariko, use it to wake Talon.

Cojiro



Get it from the chicken girl in Kakariko, after you woke Talon, use it to wake the guy in Lost Woods.

Odd Mushroom



Get it from the guy in Lost Woods, after you woke him.

Odd Potion



Get it in the Potion Shop in Kakariko for the Odd Mushroom.

Poacher´s Saw



Get it in Lost Woods for the Odd Potion.

Broken Goron´s Sword



Get it in Gerudo Valley for the Poacher´s Saw.

Prescription



Get it at Death Mountain Trail for the Broken Goron´s Sword.

Eyeball Frog



Get it from King Zora for the Prescription.

World´s Finest Eye Drops



Get it in the Laboratory at Lake Hylia for the Eyeball Frog.

Claim check



Get it from Biggoron for the World´s Finest Eye Drops.

3 days later he will give you Biggoron´s Sword.