Check out these car vent air fresheners available in many different styles and we can even create a custom one. The circle is 1.75" and is made out of 1/8" MDF, Baltic Birch, or Natural Wood and has a metal clip on the back to fit your vents perfectly.
Current scents available: Unscented (Use your favorite essential oils or scents), Peppermint, Eucalyptus, Tea Tree, Orange, Lavender. (More coming soon)
Most air vents in cars are horizontal. If yours are different, let us know and we can change the way the clip is glued on.