Press “brew” on your coffeemaker. Don’t put any grounds in it, no water either. Just let it cough and sputter. And when it’s finished, press “brew” again. And again. And again. How many times can you press that button? How long does yours last, running on empty like that? My best friend, hers lasted for two whole years! My little sister’s wasn’t far behind. As for me, well, mine's still going strong.