A ceramic bowl would be best that way they cant tip them over. Its recomended not to use water bottlesn as it can potentially hurt them.
http://www.petsmart.com/product/index.j ... Id=3135685
I have two of the dark blue bowls, one for water and the other for food. Im not sure exactly what size they are mybe the 5 oz? Theres only one option to but online from them so Im not quite sure. I got mine in store.