Add boiling water to jelly powder in large bowl; stir 2 min. until completely dissolved. Add ice; stir 3 to 5 min. or until jelly is thickened. Remove any unmelted ice. Whisk in 1/3 cup Cool Whip until blended. Pour into 4 dessert dishes.
Refrigerate 30 min. or until firm.
Drop remaining Cool Whip by spoonfuls onto desserts to resemble ghosts. Add chocolate chips for the eyes.