Light bulbs can be found in more things than just table lamps. For example, your space heater and microwave both use light bulbs. However, it's important to remember that not all light bulbs can be used interchangeably. In fact, incandescent, halogen, and fluorescent light bulbs can be found in a variety of appliances.
Of course, this is the most common category of light bulb usage. However, it not only includes general lighting such as table lamps, but also accent lights used to highlight decorations, and decorative lighting such as chandeliers. Most appliances in this category utilize standard incandescent light bulbs. However, replacing incandescent light bulbs with energy efficient compact fluorescent light bulbs (CFL bulbs) can save you up to $30 in the bulb's lifetime and will pay for itself in about six months, according to Energy Star. Plus, it's good for the planet: CFL bulbs consume about 75 percent less energy than standard incandescent bulbs.
Heat lamps are commonly used to provide a small amount of warmth to a highly localized area and typically use halogen bulbs that feature extremely hot filaments. In addition, many space heaters use light bulbs to generate warmth, although many also rely on heated oil. Energy efficient halogen space heaters fit into this category, as well. One other common heating appliance that uses light bulbs is the microwave, although in this case, the bulb is used only for lighting, not heating, purposes.
Car headlights and taillights use powerful halogen light bulbs to let you see the road at night and to help keep your car visible. However, outside lights aren't the only lighting fixtures in a car. Inside, you'll typically find interior dome lights that require low-powered LED bulbs, which can last up to 50,000 hours before wearing out.
Traditionally, flashlights have made use of standard incandescent light bulbs to provide a direct stream of highly-concentrated light. But these days, flashlights using LED technology are becoming more and more popular, and are reasonably priced. Again, not only are LED bulbs extremely long-lasting, they also use very little electricity, are cool to the touch, and are shatterproof.