What you need:
Red Apples (the darker the skin the better) or you could go super stylish and have different shades of vampire lipstick...
Marshmallows (small and large)
Slice apples into thin wedges cutting out the core, spread some peanut butter on the insides of two slices. line the curved side with some small marshmallows for teeth. Cut the large mallow (you can use scissors) into pointy teeth and add two of these for fangs. Voila. Simple and fantastic.