Stained Glass Hat

Kate, an artist in Odesa, Ukraine, creates marvels of stained glass which she sells on her Etsy store called Sea Stained Glass. She has not yet said if she will sell her latest creation: a functional cap made of stained glass.

As you can see from this video, it's quite functional. Although a bit heavy, it's comfortable--in large part because Kate shaped it for her head specifically. She mentions that the visor is good alternative to sunglasses (which she doesn't like) because it shades her eyes without resting on her face.