Place cream cheese, butter, powdered sugar, chocolate chips, and 1/2 a cup of M&M's into a large mixing bowl.
Blend all ingredients well.
Roll blended ingredients into a ball.
Place candy robin eggs around the bottom of the cheese ball.
Cover the rest of the cheese ball in M&M's.
Refrigerate for 1 to 2 hours.
Serve with Vanilla Wafers and Graham Crackers.