Place ice cubes in a resealable plastic bag and wrap bag in a clean kitchen towel. With a meat mallet, coarsely crush ice; fill small bowls with crushed ice; set aside. With butter, grease a ring about 1 inch wide inside a large heavy saucepan about 3 inches from the top. Place maple syrup in the pan; bring to a boil. Cook, without stirring, until a candy thermometer reads 235°, about 10 minutes. Remove from the heat. Drizzle strips of syrup over ice with a small wooden spoon. Using a fork, lift and wrap strips of syrup around fork and enjoy!