A Shulker box is a storage container in the game Minecraft that allows players to store items while also being portable. Unlike regular chests, Shulker boxes retain their contents even when broken and can be transported in the player's inventory. This makes them particularly useful for organizing and carrying large amounts of items. To craft a Shulker box, players need a chest and a Shulker shell, which can be obtained by defeating Shulkers, a type of enemy found in End Cities. Shulker boxes come in various colors, allowing for easy organization and identification of stored items.