Minecraft wiki entry for Furniture, associated text: Most nicely built bathrooms have some kind of tiles for the floor. Slabs can help you save time and resources if you're in survival. Quartz looks attractive in bathrooms as they add a clean, polished feel and can be chiseled into different styles. You can even make bathrooms with running water, but these would mainly serve as decorations since you (hopefully) can't actually take a bath or use the toilet. Technically, any small room with an infinite water source and a door, qualifies as a "water closet". However, here are some ways to build fixtures that can be used for disposal and/or decoration.