When I have the "thungries," which is that time when I want something, but I just don't know what it is, I try a cup of bouillon.
I buy the reduced-sodium kind, put a little less hot water in it, and make a joke about having roast chicken or roast beef as I sip it. It is comforting, relieves both hunger and thirst, and it tastes good for very minimal calories. There are other flavors such as vegetable and onion, as well.
There is a brand I like called Better than Bouillon that, while not lower in sodium, has more flavor than the typical cubes and is easier to use, as it is already softened into a paste.