Relics (and Broken Relics) are the remains of the Ancient Civilization found in the Ruins. When destroyed, via Hammer or explosives, like Gunpowder, they can drop various items. Broken Relics can be repaired with Rocks to restore 20 sanity.
A vase can drop Trinkets, with a rare chance to drop Silk, Sewing Kits, and Thulecite. Breaking a Vase can also spawn a Cave Spider, Spitter, or a Splumonkey.They are listed in the prefab file titled "smashables".
Plates, Bowls, and Chip Bowls drop nothing.