Skip the vending machine and satisfy the afternoon “munchies” with a healthy snack you packed at home. You’ll save money and most likely a bigger bang for your nutritional buck. In fact, buying snacks on-the-go can be twice as expensive as bringing them from home. “Homemade” baby carrots and hummus costs $1, but pre-packed will run you $2. Plan ahead to get snacks that do good for your wallet and your waistline.