I have found that I need a snack in the afternoon to tide me over until dinner. Some things I keep on hand:
Low fat cheese
90 calorie granola bar
Lightly salted shelled pumpkin seeds (pepitos)
Natural Peanut Butter
Cereal/1% Milk (I also love almond milk, only 60 calories per cup, it does not have as much protein, though)
Also, I tried the Wasa Crisp 'N Light crackers for the first time this week and love them. They're only 60 calories for three LARGE crackers. Have these with some light tuna salad, hummus, low fat cheese, a little peanut butter, etc.