A Bright Idea
How many Dwarves does it take to change a light bulb?
Sane people will never ask that question. Ask a Dwarf to change a light bulb--and the Dwarf will take one look at the burned-out bulb and believe they can invent something much, much better.
Not only will the new and improved light bulb never burn out, but it will be bright enough to be used as a replacement bulb for a good-sized lighthouse. It can miraculously be used as a replacement build for any vacuum tube ever invented for vintage radio or television sets--or for any electronic device, for that matter--but generates brilliant illumination in the infrared and ultraviolet frequencies.
Last but not least, the new and improved light bulb is completely shatter-proof and cool to the touch, and may be safely handled with bare hands--although humans are advised to use lead-lined gloves for their own safety.