This has got to be one of the most stylish products on our list. This Vyaime Car Essential Oil Diffuser boasts a super sleek design that will enhance the look, feel and smell of any vehicle! Not only stylish but practical too, this diffuser has been designed to comfortably sit in your vehicle cup holder. This portable car diffuser is USB powered, making it versatile enough to use in your car, home and office. There are several modes: continuous, intermittent and with or without light. The lights change color, but they’re super subtle so they won’t distract you when you have your eyes on the road.