How do I bring something back after a script has removed it?
Don't remove it, Parent it to ReplicatedStorage and then if you want it back, Parent it to Workspace - or wherever you need the "something".
Place a copy of the something into ServerStorage
and when you remove it and want it back, just clone it from ServerStorage
and useVector3.new
to place it where it's wanted.
(This would only work for a model, If it's a GUI you'd clone it and change the parent to the local player)
But why would you want something back after it's been removed?