Came across this list of healthy snacks and some tips about snacking.

The same blog post describes a healthy snack as 

"A healthy snack is usually whole-grain, unrefined, and low in fat and added sugars. They should be a perfect combination of proteins, carbohydrates and high-fibers." And a healthy snack may includes:

•   apple slices with peanut butter
•    carrot sticks with hummus

•    grapes and cheddar cheese
•    sliced turkey on wheat bread
•    snack mix made with raisins, nuts, and whole wheat cereal 

•   whole grain tortilla or bagel with low-fat cheese or cream cheese
•    bean burrito on a whole-wheat tortilla
•    small salad with lean meat or tuna
•    cut-up fruit or easily portable whole fruit, such as apples, oranges, or clementines
 

More snack ideas and tips here