For the caramel, place 1 tablespoon butter in a large saucepan and melt over medium heat. Add caramels and evaporated milk, and cook until melted together. Set aside. For the crispy treats, butter the inside of a very large bowl. Pour all of your favorite things into the buttered bowl, then pour caramel mixture all over. Toss and stir with a large spoon or spatula until coating is distributed. Butter sheetpan with remaining butter. Pour mixture into sheetpan and press flat. Let cool, then cut into portions.