Gassed Auto Duftverstärkungsgerät

Stuck this on my dash vent and my whole commute now smells way better. The three-inch size is small enough that it doesn't block the airflow at all.

The three-inch round size fits perfectly in my cup holder without blocking anything. Scent is strong enough that I notice it right when I open the door, but it doesn't overwhelm the whole car.

Stuck this on my dash vent and my whole commute smells way better within a minute. The three-inch size is small enough that it doesn't block the air, which was my worry. Honestly forgot it was even there until a passenger asked what the smell was.