On a charcuterie board, wooden cutting board, or large platter, place the powdered donuts as markers on both where you want the top of your skull and the base of your skull to be.
10 mini powdered donuts
Place one donut on each side where you want the cheekbones of the skull to be.
Put the blueberries on where the eyes should be, making them look as circular as possible.
1 cup blueberries
Lay out the chocolate chips in a triangle shape to form the nose.
½ cup chocolate chips
Add the unwrapped rolos where the mouth of the skull should be.
1 pack Rolo candies
Encircle one blueberry eye and top of the nose with mini marshmallows.
1 cup mini marshmallows
Fill in the other blueberry eye with a mixture of white chocolate chips and mini marshmallows.
1 cup white chocolate chips
Add the popcorn to form the shape of the bottom half of the skull face and around the rolos to form the mouth.
2 cups popcorn
Either leave the bottom donuts as the base of the skull or remove them.
If desired, you can add decorations like fake plastic spiders, candy corn, and powdered donuts around the edges of the skull.