How do I ensure the player always has something in their inventory equipped?

If you don't understand what I am asking, you should play Blood & Iron, in which the player always has something in their hand. I made a script here that forces the equip function, but it equips everything in the player's inventory, which I don't want. It also removes the unequip function.Here's the script:

game:GetService("Players").PlayerAdded:connect(function(player)
	local function hookTool(Tool)
		if not Tool:IsA("Tool") then return end
		game:GetService("RunService").Heartbeat:wait()
		Tool.Parent = player.Character
	end
	
	player:WaitForChild("Backpack").ChildAdded:connect(hookTool)
	
	player.ChildAdded:connect(function(child)
		if child:IsA("Backpack") then
			child.ChildAdded:connect(hookTool)
		end
	end)
	
	end
)

I would suggest using

if tool.Activated then -- finish the line of code