Melt some chocolate and spread it on a parchment-lined baking sheet. Sprinkle with coloured candies such as crushed pieces of candy cane or Christmas-coloured smarties. Refrigerate to set and then break into irregular shapes before serving.
Variation: Replace the candies with dried or candied fruit, roasted nuts, crumbled cookies, or a happy mixture of all four! You can also create marbled bark using white, dark, and milk chocolate. Encourage your kids pull out all the creative stops!