DIY Crayon Drip Holiday Ornaments - need: clear glass ornaments, crayons (paper covering removed), hair dryer. Remove stem from glass ornaments. Cut or break small chunks of crayon and drop inside ornament. With hairdryer setting on high, blast heat on ornament to melt crayons. I found I could handle the ornament if I didn't hold the heat too long in one spot. Twirl ornament to spread color. When you are satisfied with coverage, shake or heat remaining crayons so they'll slide out opening.