Buy a bath mat with rubber backing. It is very important to have non skid rugs in your bathroom to prevent a fall. Never use cloth rugs in a bathroom. They come in many colors and are sold in most department stores. While you're there buy a matching shower curtain and waste basket.
Green plants are always nice in a bathroom.
Place a nice green plant on your sink counter top. Go to a thrift store and look for old, unique bottles. Sometimes you can find the colored bottles and they really add a nice accent to your bathroom. While you're in the thrift store look for some nice little bowls, preferably glass with lids. These little bowls can be used for hair pins, cotton balls, manicure tools and many other items.