Reflectors are a great way of really getting the most of our your equipment, by ensuring that heat is directed down, and not lost upwards, meaning your heat source is more efficient, and therefore using less electricity for you. For ceramic and heat bulbs, a lampshade style reflector around the bulb can make a huge difference, though be sure to check the wattage of the holder is correct for your wattage of the bulb that you're using.