I installed backpack, which in my opinion is one of the coolest plugins. There are different options for permissions, which are as follows: backpack.use = Allows the users to use the Backpack itself. backpack.upgrade = Allows for users to upgrade their Backpack. backpack.keepitems = Allows users to keep items in Backpack upon player death. backpack.noblacklist = Allows users to bypass the backpack blacklist. backpack.noupgradecost = Allows users to upgrade backpack for free. backpack.overflow = Allows item pickups to automatically go into the backpack if users inventory is almost full. backpack.share = Allows backpack to be shared across specified worlds from share.yml backpack.admin = Allows user to use Admin Panel. backpack.size.18 = Allow 18 Slot Backpack. backpack.size.27 = Allow 27 Slot Backpack. backpack.size.36 = Allow for 36 Slot Backpack. backpack.size.45 = Allow for 45 Slot Backpack. backpack.size.54 = Allow for 54 Slot Backpack. My config looks like this: http://pastie.org/6035337 I have multiple groups with larger sized backpacks. IE, my VIP group gets a 27 slot backpack. So they have the permission backpack.size.27. However, when they type /backpack (the command to open backpack), it appears as the default. I'm not sure why this is.