Rewrite of the ExtraInventory plugin by Nemesis213 with backwards compability.
/inv- Opens your extra inventory./inv spy <player- Opens the extra inventory of another player.
extraInventory.use- Allows you to use an extra inventory.extraInventory.rows.<x>- Sets the amount of rows you have.extraInventory.spy- Allows you to spy on the inventories of other players.
Drop the plugin into the plugins folder and it will boot up without a problem.