The Kinstone Bag is an item from The Minish Cap.
Link receives the Kinstone Bag from the Hurdy-Gurdy Man in Hyrule Town after he returns from the Deepwood Shrine. Link uses this bag to carry any Kinstone pieces that he collects. This bag has an infinite capacity of carrying Kinstones. Once Link completes all Kinstone Fusions in the game, the Kinstone Bag is replaced with a Tingle Trophy received by Tingle. However, Link can still look at his Kinstones he has obtained during his travels. Link can do this by pressing (A) while the cursor selects the Tingle Trophy.