In a large mixing bowl, combine the softened cream cheese, shredded cheddar, and garlic powder. Use a spatula or spoon to mix until the ingredients are fully incorporated and the mixture is smooth and creamy.
Gather a sheet of plastic wrap and transfer the cheese mixture onto it. Use the wrap to shape the mixture into a round ball, then chill it in the refrigerator for about 15-20 minutes to firm up.
Place the chilled cheese ball on a baking sheet and spread crushed crackers all over its surface, pressing gently to adhere. This creates a textured, bug-like coating.
Using small handfuls or tools, arrange pretzel sticks around the cheese ball to resemble spider legs, pressing them slightly into the cracker coating to secure them in place.
Slice black olives into tiny rounds and use them to create multiple small spider eyes on the cheese ball, placing some mini candy eyes for extra detail if desired.
Arrange the completed spider cheese ball on a serving platter. Adjust legs and eyes as needed for the perfect creepy-crawly look.
Serve the spooky Spider Cheese Ball with crackers or breadsticks for a fun Halloween appetizer. Enjoy the playful, creepy presentation and creamy, crunchy texture!