The Sound Stone
After completing the game, you can find the Sound Stone in your house. Interacting with it allows you to listen to all the music tracks from the game, a nice treat for fans of the soundtrack.
Tingle and his Brothers
Tingle, a recurring character in Zelda games, appears in The Minish Cap along with his brothers. They are involved in Kinstone Fusions that reveal the locations of the Wind Crests. Fusing with all of them is essential for reaching the Cloud Tops.
The Goron Merchant
A Goron merchant can be found in the Veil Falls area after a series of Kinstone Fusions. He sells rare Kinstone pieces and other valuable items, making him a crucial stop for completionists.
The Great Fairy
There are Great Fairies hidden throughout Hyrule. Finding them and completing their challenges (often involving Kinstone Fusions) can reward you with powerful upgrades, such as a larger bomb bag or quiver, or even a full Heart Container. These are often well-hidden and require keen observation to find.
Keep an eye out for subtle nods to other Zelda games, such as familiar character designs or sound effects. The Minish Cap is full of charming details that reward thorough exploration and a love for the series. Don't hesitate to revisit areas with new items, as many secrets are only accessible later in the game.