Okay, I admit, I am slightly fastidious and hate when guests don’t use coasters! If you also cringe at the thought of spills, then the Water Absorbing Concrete Coasters are a godsend! Designed to soak up spillage, the coasters are made from a non-toxic blend of ash and cement and featuring a non-stick base. These cool coasters are eco-friendly and it is quite fascinating to see how liquid soaks in to the coaster. You can purchase the Water Absorbing Concrete Coasters from here.