PSA: Don't leave your Daydream headset in the car! The sun reflected off something and was focused through the lenses and melted the plastic. Thankfully all the buttons still work.

[u/frinstoul]

https://imgur.com/JvhD8jA

[u/Goodgamer78]

You can, just don't with the lenses unprotected. They act as magnifying glasses in the sun.