You will need:
- a small, sharp kitchen knife (or an Xacto knife)
- filling of choice: fruit salad, oatmeal, yogurt, chocolate mousse, sorbet, etc.
Slice the tops off of the oranges and set aside. Cut around the insides and remove the orange segments. (Reserve for fruit salad, homemade orange juice, or smoothies.) Cut out faces as you would for a real jack-o-lantern, then fill and serve.