This compact plug-in car freshener from @Aroma can be inserted into a lighter socket without the need to attach any additional devices or wires, preventing unnecessary tangles and frustration. The device is just a little bit bigger than a tube of lipstick and rather than having to purchase a vial of fragrance, what makes this car diffuser so great is that you can use your own essential oils. To get the good scents going, all you need to do is add just a few drops of essential oil onto the device's scent pad, load the scent pad back into the aroma tray and plug it in. To get you started, the car diffuser comes with six scent pads and a sample of lavender mint essential oil.
Even if you find yourself stuck in traffic, at least you can take a deep breath and enjoy some gentle aromatherapy.