Small Bomb Bag

In Skyward Sword, there is an item called the Small Bomb Bag. It is basically an add-on to Link's primary Bomb Bag. The Small Bomb Bag allows Link to carry five additional Bombs. It can be purchased from the Gear Shop that is in the Bazaar for 150 rupees.

Upgrades

The Small Bomb Bag can be upgraded so it can hold more bombs. The first upgrade is the Medium Bomb Bag, which holds ten additional bombs. This upgrade requires 3 Ornamental Skull, 1 Blue Bird Feather, and 1 Lizard Tail. The cost is 50 Rupees. From there, the Medium Bomb Bag can be upgraded into the Large Bomb Bag, which can hold 15 additional bombs. This upgrade requires 4 Jelly Blob, 3 Lizard Tail, 2 Hornet Larvae, and 1 Golden Skull. The cost is 100 rupees. These upgrades can be performed by Gondo; the Scrap Shop owner.