Yes there are! As mentioned, chili, sun, cauliflower, gorgonians, sponges. But if you look into them, they all require very specialized habitats that are just as costly and difficult to setup as is MH lighting (I assume you're trying to circumnavigate the cost of MH). But, most professional aquarists have neve been able to keep any of the above for a long time (sponges seem to be the exception). I'd recommend a small lighting upgrade and keeping low light corals, like mushrooms, tube anenomes, some zoas, sponge (good luck, unless they're packaged very carefully, poor handling almost always kills them). But with shrooms, tubes, zoas, and maybe an elephant's ear, you should be able to put together a somewhat colorful pseudo-reef. Also, add some interesting inverts, like coco worms, feather duster, some nudibranches can achieve a level of prosperity in a home aquarium (most people think they are not hardy as they usually die off in less than a year, however this is part of their very short life cycle).