Let me start by saying these little glass diffusers are *adorable*. The ombre color effect is even prettier in person—like mini stained-glass ornaments for your car. I hung a few from my rearview mirror, and they catch sunlight beautifully while subtly releasing lavender oil (my fave).

The good: They arrived neatly packaged in foam, and all 20 were intact in my order. The glass feels thick, and the metal hangers are sturdy. I’ve refilled mine twice now—just 3-4 drops of oil lasts days. Pro tip: Use a toothpick to wedge cotton inside for slower diffusion.

The not-so-good: A friend ordered these too, and HALF of hers arrived with broken tops (hence the 4-star average). The glass around the neck is thin—definitely handle carefully during refills. Also, the included ribbons are cheap; I swapped mine for leather cords.

Verdict? Gorgeous and functional if you’re gentle with them. Maybe order extras as backup!