Enchanting Items that Usually Aren't Enchantable

Hello, people that know more than me,
I was attempting to write a plugin that would allow a player to put a piece of paper in an enchanting table, and be able to enchant it like any normal tool or book. I have a system for enchanted paper already, but I just want to be able to make paper into enchanted paper by using the table.
Doable or not?

Also, I'm having trouble creating Inventories that appear to a player on command, please give an example if you're willing.

 

InventoryClickEvent and check if the paper is in the enchant table then get the ItemMeta of the paper and theres a addEnchant() method.
As for the Inventory to create one you do:
This will create a chest inventory, the size has to be a multiple of 9, so 9, 18, 27, 36
Inventory inv = Bukkit.createInventory(null, size, title); or
The first parameter is for the Inventory Holder if you don't want one just do null
Inventory inv = Bukkit.createInventory(null, InventoryType.FURNACE, title);

 

Thanks, I'll try that, and as it turned out my inventory can't have a number of rows that isn't a multiple of nine lol