A Concrete Weed Grinder

For the weed smoker seeking a more tactile grinding experience: This Sphere Grinder, by German weed paraphernalia company Herb Studio, is made out of concrete. It's begging to be handled. Inside is an anodized aluminum grinder, and a neodymium magnetic closure. It's roughly four inches in diameter and weighs 2.2 lbs; a non-slip silicone base means it won't mar surfaces. These run $100, and come in two colors.