Sometimes a craving can be quelled with just a glass of water, and it can also keep you hydrated as well (in fact, drinking water before you eat is a good practice, since sometimes people confuse dehydration with hunger). If a glass of water isn't cutting it, eating a snack featuring fruits and vegetables that have a high water content like apples (which are good sources of fiber, as well), watermelon, or cucumbers can have the same effect.