They are making LED bulbs. I’m sure you’ve seen LED flashlights. Here is just a sample of one company that sells all kids of LED lighting. The big drawback is that they are very expensive compared to the others. I expect that eventually they will get cheaper. Last Christmas I replaced the halogen light in my fiber optics decorated Christmas tree with an LED equivalent because the halogen was very hot and the fan to cool it was noisy. It cost me almost as much as the tree did originally. I know that’s ridiculous, but being a techno junkie, I just had to do it. If the tree lasts 20 years I might make back the money because the LED uses much less power too. ;-)