Chests

Chests are pieces of Furniture that are used for holding items. The chest can hold up to 20 items within a 5x4 space.

Chests can only be harvested with a hammer when empty.

Chests can also spawn underground and in other locations, they usually contain useful accessories and other treasure. These chests too can be harvested and brought home once empty.

In the initial version of Terraria, chests could be used to farm more chests when chests (filled with items) placed on sand were mined. This bug was fixed in 1.01; now sand on which a chest is placed will not be affected by gravity. Some chest-duping bugs still existed in 1.02, however.

Loot
The loot for any given chest is determined as follows:

Every chest has one rare item from the lists below, as well as an assortment of other general loot. This extra general loot includes:
 * Coins
 * Arrows
 * Bombs
 * Dynamite
 * Bottles
 * Copper Bars, Iron Bars, Silver Bars, and Gold Bars
 * Shuriken
 * Torches
 * Lesser Healing Potions

Floating Island
Note: So long as there are at least 3 islands, there is guaranteed to be at least one of each of these 3 items in a given world.
 * Lucky Horseshoe
 * Starfury
 * Shiny Red Balloon

Dungeon
Note: There is guaranteed to be at most one of each of these items in a given world. If fewer than six dungeon chests are generated, items from the end of the list will be missing. Each remaining dungeon room has a 50% chance of receiving a chest containing only standard loot from the Underground list.
 * Magic Missile
 * Muramasa
 * Cobalt Shield
 * Aqua Scepter
 * Blue Moon
 * Handgun

Underground

 * Band of Regeneration
 * Magic Mirror
 * Jester's Arrow(25 to 50)
 * Angel Statue
 * Cloud in a Bottle
 * Hermes Boots
 * Enchanted Boomerang