Why is it so useful? The plugin storage system is non-volatile, so unless a player removes an item from their backpack nothing will happen to its contents! Along with many other utilisations, this plugin is great for SMPs or even just playthrough servers with your friends. How does it work? In-game: All the player must to is use the /backpack command and it opens their backpack. From there they can store or take out any item they need. It works just like normal chests. Host: Just put the .jar file in your plugins folder and when your run the server it will create two files. One file (backpack/setting.yml) allows you to change the setting of the backpack such as the title and size, the other ( data/playerdata/ PLAYER'S UUID /profiles/profile- PROFILE NUMBER/inventory) allows you to see the itemstacks in people's inventories.