Combine all ingredients, except water, in a food processor and process until smooth.
Slowly add small amounts of water to the mixture, processing after each addition, until the mixture holds together when shaped into a ball (you may not need to use all the water).
Roll teaspoon amounts of mixture into balls. Combine desiccated coconut and extra cacao on small plate and roll half of the balls in this.
Use a sharp knife to cut chocolate into wing-like shards and insert into balls to create bat wings.
Decorate with candy eyes and sunflower seeds as fangs. Store in container in fridge.