Many makers often include a reusable filter which can be washed out after every use. Some people prefer using paper filters instead of the metal screens.
Coffee machines today also have glass or metal carafes that keep the coffee hot once brewed. A warming plate below will maintain the temperature for hours if needed. Depending on the model, the carafe will vary in size. Large models can hold 12 cups and individual ones can only do a cup or two at a time. And of course, if you are interested in espresso, then your choices increase substantially. Many of the espresso machines will brew coffee too. A good place to start your search is with the DeLonghi espresso machine.