Player Vaults are the system used by players to store extra items on their user in a portable manner. They can be accessed anywhere and each Player Vault can store up to 54 items. Cultivate's Player Vaults are custom coded and are made in a way which avoids duplication glitches/exploits. Player Vaults are obtainable in a number of ways. This includes Donor Ranks, Player Levels, and using the Network Point Shop.
/pv <number> - Opens up a specific Player Vault based on number.
/pv search <item> - Searches all Player Vaults for a specific item. Only accepts Minecraft item names. Example: To search for Grass Blocks, you can do /pv search GRASS_BLOCK.
This video below showcases how to use Player Vaults, and how to search for an item.