Want a polite yet clear way to tell people your vehicle's smoke-free? This lighter safety plug firmly inserts into your vehicle's lighter receptacle to take the place of your unwanted cigarette lighter element, with the added benefit of preventing accidental shocks or burns. It's also pretty handy for capping even a normal power outlet that's missing a cover that you don't want to use or want to keep clean of dust, liquids or debris. They're available in packs of 1 if you're just fixing up your own vehicle, or 20 if you want to keep a whole vehicle fleet clean and smoke-free.