i am loving penny round tile!! i had a meeting fri to select the tile for the spec home i shared with y'all and we did this adorable tile in two of the bathrooms. i think it is a refreshing take on ceramic tile. it is definitely not limited to just ceramic- there are glass option, stainless steel, cork, etc. we are going w/ a coral/ gray palette in one of the baths and then a sky blue (pictured above) in the other- both will be flooring. i think this is something you will be seeing a lot more of.