These are the cutest little touch for your read view mirror! I love the boho look to these.
The crescent moons serve as a reminder to embrace every phase of life shining brightly, just like the moon. The eyeballs represent our third eye, and living consciously by making sure ours are always open. 
Simply drop 5-10 drops of your favorite essential oils on the beads, and diffuse for2-4 hours! 

Rear View Mirror charms/diffusers