Christmas Bulb Ornaments. Brighten your tree! Christmas Bulb Ornaments have the look of classic, large-bulb lights. They are sure to stand out on your tree, fireplace mantel, doorways, walls, car rearview mirror or anyplace else you can think to hang them for the holidays. Use your own markers to personalize them before hanging to display your entire family, or use them as unique gift tags the recipient can enjoy in the future. Resin. 4"