Blood mat is a product or an accessary that is often used as a part of Halloween decorations. You can have a bathroom mat set with the same theme or complimenting theme for the decor.
For the decoration around the house you can place bloody floor mat around the house as an indoor decoration. You can either have a blood mat or a color change bath map, it is also a type of blood mat but the difference is that it changes its color to show the blood only when it is wet.
Along with this you can also make this blood decor better by accessorizing with some other products as well. You can also have Halloween window light decorations, it can be blood splatter on the windows so it goes with the mat or it can be some other scary decoration to go with the decorations around the house.