Prepare the salami: Using kitchen scissors or a sharp knife, make a small cut about ¼ of the way into each side of a salami slice, directly opposite one another.
Shape the eyeballs: Gently twist the salami at the cuts to create a small pocket in the center. Nestle a mozzarella ball inside.
Secure with a skewer: Thread a cocktail pick through one end of the salami, through the mozzarella ball, and out through the opposite end of the salami to hold everything in place.
Create the iris: Using a small paring knife, carefully carve a shallow divot into the exposed side of the mozzarella ball, just large enough to hold an olive slice.
Add the finishing touch: Slice the pimento-stuffed olives crosswise into rounds, keeping the red pimento in the center. Gently press one olive slice into each mozzarella ball to create the appearance of an eyeball.
Serve: Arrange on a platter or use as a spooky cocktail garnish!