Avoid fattening foods. Some people substitute sucking lollipops or candy. Carrot or celery sticks are good to bite and good for you. Chewing gum is also a good substitute. Others enjoy cinnamon sticks or licorice roots from health food stores.
Caffeine is a stimulant like nicotine.
Once you stop smoking, your body's chemistry changes and caffeine stays in your body longer. You may crave cigarettes more to smooth out a caffeine high. To help make these initial stages of nicotine abstinence easier consider gradually reducing your coffee intake if you drink a lot of coffee or eliminating it if you are a moderate drinker. Once alcohol is in your system your defenses will diminish greatly. Drive to work using another route to avoid familiar triggers along the way.