Line a baking sheet with parchment paper.
Spread out an even layer of Chex, Cheerios and pretzels sticks.
Place the chocolate in a microwave safe bowl and heat in the microwave at 15 second intervals. Stir in between until the chocolate becomes smooth.
Pour the chocolate over the cereal mixture.
Top with M&Ms, candy corn, marshmallows and candy eyes.
Mix together with a wooden spoon.
Place in the fridge until the chocolate hardens (about an hour).
Break into pieces to serve.