My Ariat laced paddock boots. They may not be unbreakable, but they are pretty darn awesome for the money and have saved my feet from horses stepping on me more than once. Plus, they have a great versatile look.
Other fav: My IRH 5 Vent riding helmet. This thing is a lifesaver, literally, and while I've fortunately never had to test that part out, I know my head is in excellent hands. Normally I'm a cheapskate but as far as helmets go, my head is priceless, so the IRH 5 Vent is worth the big price tag, has a great show or schooling look, and is extremely comfortable.
It's a dangerous business, Frodo, going out of your door," he used to say. "You step into the Road, and if you don't keep your feet, there is no telling where you might be swept off to."