This edible, decorative ornament is fun because of the transformation that takes place in the ingredients. Take your kids to your local cooking or holiday store and have them pick out their favorite Christmas cookie cutters. Then, buy a nice assortment of colorful hard candies. For best results, stick to Jolly Ranchers and Lifesavers. When you get home, wrap the cookie cutters in foil and spray them with cooking oil to avoid sticking. Preheat your oven to 350 degrees Fahrenheit (176.6 degrees Celsius) and lay the cookie cutters out onto a cookie sheet lined with foil. Then lay out the colored candies in a single layer inside each cutter. You can sift through to get single colored ornaments or go for multi-colored. Bake the ornaments for about 10 minutes, or until all the candies are melted. Remove the ornaments from the oven and poke a hole for your ribbon hanger near the edge of each one while it's still hot. Once it's cooled, string some ribbon through the hole and hang it on the tree.