Jerry Box

Jerry Boxes are loot boxes dropped from Hidden Jerries while Mayor Jerry is in office.

Obtaining
While Mayor Jerry is in office, there is a chance that a hidden Green, Blue, Purple or Golden Jerry will appear after the player chops logs, breaks crops (except Nether Wart), mines blocks, or kills mobs. Jerries take one damage per hit regardless of the weapon used, much like Spooky Mobs. Killing a Jerry drops a Jerry Box corresponding to its color.

Jerries can spawn on the player's private island as well as in Dungeons. After spawning a Jerry, there is around a 6 minute cooldown before another Jerry can spawn. 

Drops
Right-clicking with a box in hand opens a menu from which the player can open the box. Drops include skill XP, coins and unique Jerry items such as the Jerry-chine Gun. All Jerry Boxes drop the same Jerry items.

Trivia

 * Similar to the Grinch, Jerries will run from the player that spawned them when spawned. This often causes the player's Hidden Jerry to fall into the void, into lava, or a large distance. If the player's Jerry dies due to fall damage, he will still drop a Jerry Box as long as the player had hit it at least once.
 * Jerry Boxes were salable on the Auction House before they were on the Bazaar.
 * Like Spooky Mobs, the Thunderlord/Thunderbolt enchantments do not bypass their defense.
 * Flame enchant will deal 1 damage a second to jerries.
 * If another player kills the summoning player's Hidden Jerry, the summoner has pickup priority of 25 seconds, after which anyone can pick up the box.
 * Using the Burning Potion effect will instantly kill a Jerry.
 * It is possible to get a Runic variant of Hidden Jerry, quadrupling the HP they have.
 * While Jerry is elected, it is possible to get a Hidden Jerry from a minion breaking a block.
 * Fishing rods could at some point bypass their defense.
 * Telekinesis does not work on Jerry Boxes.