How would I fix this to make a visual inventory system?

Here is the source code to my Local script in my Tool named "Test"

local Players = game:GetService("Players")
local Player = Players.LocalPlayer
local mouse = Player:GetMouse()
local replicate = game.workspace.yello
local toolz = script.Parent




script.Parent.Equipped:connect(function(mouse)
	mouse.Button1Down:connect(function()
		if mouse.Target then
			print("The Mouse is pointing to the" .. mouse.Target.Name)
			if mouse.Target.Name == "Hello" then
				replicate:Clone()
				replicate.Position = game.Hello.Position
				toolz:Destroy()
			end
		else
			print("The Mouse is pointing at nothing")
			
		end
	end)
end)

I sort of want this type of inventory system.

https://gyazo.com/83799e2b72adedd05bb2948903dbcca2