These rock candy-embellished cones are a fun -- and easy! -- holiday craft project. Pour horizontal rows of candy crystals in three or more colors on a baking sheet with the rows flush together. Wrap solid light-color cardstock around foam cones, slightly overlapping the paper at the back of the cone and securing it with hot glue. Do not apply the glue directly to the cone, which will melt. Larger cones may need two sheets of paper to be completely covered. Spread crafts glue on the cones and roll them in crystals; let dry. Re-glue and re-roll, if needed, to cover cones completely with crystals. Use hot-glue to fill in small gaps with hand-placed crystals.