Upgrades

Bag	Capacity	Source
Bomb Bag	20	Dodongo's Cavern
Big Bomb Bag / Biggest Bomb Bag	30 / 40	The rolling Goron in Goron City (child; stop him with a bomb) and a Bombchu Bowling prize – each gives the next size

Quiver	Capacity	Source
Quiver (with the Fairy Bow)	30	Forest Temple
Big Quiver / Biggest Quiver	40 / 50	Kakariko Shooting Gallery and 1,500 points at Horseback Archery – each gives the next size

Bag	Capacity	Source
Deku Seed Bullet Bag (with the Fairy Slingshot)	30	Inside the Deku Tree
Big / Biggest Deku Seed Bullet Bag	40 / 50	Market Shooting Gallery and the target in the Lost Woods – each gives the next size

Upgrade	Capacity	Source
Deku Sticks	10 → 20 → 30	Deku Scrub near the Lost Woods bridge, Deku Theater with the Skull Mask
Deku Nuts	20 → 30 → 40	Deku Scrub in a Lost Woods grotto, Deku Theater with the Mask of Truth

Item	Lets you	Source
Goron's Bracelet	Pull up Bomb Flowers (child)	Darunia – play Saria's Song in his room
Silver Gauntlets	Lift and push large objects (adult)	Spirit Temple (collected as a child)
Golden Gauntlets	Lift the heaviest objects (adult)	Ganon's Castle, Shadow Trial

Scale	Source
Silver Scale	Diving game in Zora's Domain (child)
Golden Scale	Fishing pond in Lake Hylia (adult: catch a record fish)

Upgrade	Source
Magic Meter	Great Fairy on the Death Mountain summit
Double magic	Great Fairy in Death Mountain Crater (adult)
Double Defense	Great Fairy outside Ganon's Castle (adult)

Kokiri Sword – Kokiri Forest (child).
Master Sword – Temple of Time.
Giant's Knife – sold by Medigoron in Goron City (adult). It breaks after some use.
Biggoron's Sword – end of the adult trading sequence (Biggoron).
Deku Shield – Kokiri Shop, 40 Rupees (child). It can burn.
Hylian Shield – Bazaar in the market, 80 Rupees, or free in a grave in Kakariko Graveyard.
Mirror Shield – Spirit Temple (adult).
Goron Tunic – the rolling Goron in Goron City (adult), or 200 Rupees in the Goron Shop.
Zora Tunic – King Zora after you thaw him with Blue Fire (adult), or 300 Rupees in the Zora Shop.