What are these eyeball statues everywhere?

Question

Throughout the game, there are small statues with eyeballs on them. If you inspect it, Navi says something about a fairy being inside. If you whack it with your sword, it shows you the current time.

Is there something else these are useful for?

Answer 1

These things are called Gossip Stones. Aside from telling you the time when you sword them, they have a few behaviours:

• They act like rubber if hit by Din's Fire or the Megaton Hammer.
• They rocket into the sky and explode if bombed.
• They release a Fairy if Zelda's Lullaby, the Sun's Song, or the Song of Storms is played nearby.
• They reveal secret information (some useful, some useless) if talked to with the Mask of Truth on.