PIRATE PACK
The Pirate Pack came in ZF Version 0.88 (June 2011) and added a new pirate item every day. Some items were purchased only with brains, and others with Gold. Brain-bought items included the Cannon (2 Brains), Powder Keg, Pirate Crate, Gibbet Cage, Cursed Chest, and Ship Wheel (3 Brains). Gold-bought items included the Cannon Balls, Pirate Bag, Pirate Sack, Rope, Pirate Barrel, Island Relic, and Small Keg.
They're limited time items.
Island Relic with high XP value for gold