I prefer "people dishes" for canned food. Just a regular ceramic plate. I use my own dishes
, but you can buy something cheap that you can keep apart from the people dishes. For dry food I have a stainless steel saucer, but that's kind of big for one cat. They do sell smaller stainless dishes. I prefer clear glass for water dishes--I think cats like to be able to see the water level. Remember that cats don't like for their whiskers to touch the sides of their dishes, so they should be large and shallow enough so that won't be a problem.