Changing ALL of certain item to a name

Hey guys! What would be the most efficient way of renaming every item of a certain type to something else, preferably without packets although I will result to that if that will end up being the easiest way

E.g. ALL["Cocoa Beans"] --> ["Cookie Plant Children"]

 

What is 'everything'??

Is it literally every item, block, mob, potion, armour, tool, etc?

 

Sorry I didn't make myself clear

In this case, every material, so like the example above, every cocoa bean get's renamed to the chosen alternative

 

Do a for loop, for every item in inventory of every player and same when a chest is opened and when something is crafted and change the meta then

 

You could look at how this plugin does it: http://dev.bukkit.org/server-mods/itemrenamer/