How do I make it so a tool spawns only after it was picked up?

I'd have a table that keeps track of each tool. The original tool is our Key which doesn't change, the value, however, is a table that we can update our data with every time a tool is taken.

https://gyazo.com/8a000197951d6ee1faa6451848be04dc

local ToolsFolder = game:GetService('ReplicatedStorage').Tools
local Tools = ToolsFolder:GetChildren()
local Items = workspace.Items
local RespawnTime = 3


local Cache = {}

local function NewIndex(newTool)
    local self = {}

    self.OriginalTool = newTool
    self.ClonedTool = newTool:Clone()
    self.TimeIn = tick()
    self.Taken = false

    -- Overwrite original tool so we can update table every time its taken
    Cache[newTool] = self
    self.ClonedTool.Parent = Items
end

Items.ChildRemoved:Connect(function(RemovedTool)
    for _,v in pairs ( Cache ) do 
        -- if tool is our clone then reset time and allow respawn
        if v.ClonedTool == RemovedTool then
            v.TimeIn = tick() 
            v.Taken = true
        end
    end
end)

-- Cache and Spawn tools to map
for _,v in pairs ( Tools ) do 
    NewIndex ( v ) 
end

while true do 
    for _,v in pairs ( Cache ) do 
        -- if Taken and time >= RespawnTime
        if v.Taken and tick() - v.TimeIn >= RespawnTime then 
            NewIndex( v.OriginalTool )
        end
    end
    wait(1)
end