In a large bowl, mix together butter, marshmallow cream, powdered sugar, and vanilla extract until combined. Fold in the crushed graham crackers.
Roll the mixture into balls and set onto a plate. Place the chocolate chips into a microwave-safe bowl, and heat in the microwave in 30-second intervals, stirring well until it is fully melted and smooth.
Fully coat each truffle in the mixture and set onto a plate. Decorate with candy eyes and Oreo cookies. Let sit until it is completely set.