How to create a inventory system to store models?

-- ISN'T OWNED BY ME

So lets say we have an inventory table named “Inventory”

Inventory = {};

This inventory table will contain everything in a users inventory as well as its data. Now you want crafting, so we can add materials and items in to this table. Now it will look something like this.

Inventory = {
   Materials = {}, -- All of our materials will be stored here
   Items = {}, -- All of the users items will be stored here
}

Now its as simple as learning how to read and manipulate your table properly. For example if each item has specific data then you could make a table for that specific item in your table.

Inventory = {
   Materials = {}, -- All of our materials will be stored here
   Items = {
      WoodenAxe = { -- Our wooden axe is the item, you can add as much data as you'd like in here.
         Amount = 1, -- We have one wooden axe
         Durability = 100, -- Its durability is 100
      }
   }, -- All of the users items will be stored here
}

Now you have a basic inventory set up! A reminder, this table should ALWAYS be set up on the server!

To get everything in a users inventory simply use RemoteFunction in order to return the users inventory, you can use a loop and then display it in a UI.

Crafting? Check all of the materials/items a user has and then compair it to your crafting recipes. If a user can craft something then you could put all of the items a user can craft in a table (on the server) and return it. Once again cycle through all of the items a user can craft and put them up for display.

Security is key when it comes to systems like this, so when a user fires a RemoteEvent in order to craft and item make sure you check to see if the user can actually craft that item before giving it to them.