Crush chocolate sandwich cookies in zipper-style plastic bag with rolling pin or in food processor.
Pour cold milk into large bowl. Add pudding mixes. Beat with wire whisk 2 minutes. Let stand 5 minutes. Gently stir in 3 cups of the whipped topping and 1/2 of the crushed cookies. Spoon into 13x9-inch baking dish. Sprinkle with remaining crushed cookies.
Refrigerate 1 hour or until ready to serve.
Decorate assorted cookies with icings to make "tombstones." Stand tombstones on top of dessert with Indian corn and pumpkins. Drop remaining whipped topping by spoonfuls onto dessert to make "Ghosts." Store leftover dessert in refrigerator.