I really like popsicles or sorbet! They both have very little calories per serving, the small all fruit popsicles I buy only have 40 cals each, and they take awhile to eat so they're fairly satisfying. I also like to eat a piece of whole grain toast with a thin layer of peanut butter and sometimes a sprinkle of sugar. I have a sweet tooth and both of these options satisfy my craving for sweets! I also second the popcorn idea, sometimes I buy vegan kettle corn which is slightly salty and sweet and still very low cal.