Seed Satchel
The Seed Satchel is an item that carries the Mystical Seeds found throughout Holodrum and Labrynna. In Template:OOS, it is the dungeon item of Gnarled Root Dungeon. In Oracle of Ages, the Maku Tree gives it to Link in the present after you rescue her in the past. In both cases, the bag is filled with Ember Seeds upon obtaining it. The four other kinds of seeds (Mystery, Scent, Pegasus, and Gale) can be found later in both games.
The Seed Satchel can be upgraded to hold 50 seeds of each type instead of 30, and then 99 seeds (via a secret) instead of 50.