I think the best Tomahawks are currently the TLAM's, made by Raytheon. Originally they were made by General Dynamics. They are very effective in an outdoor environment, in fact, they can turn an indoor environment into an outdoor one! Unfortunately, none of them come with wooden handles
Ok, seriously, are you talking about a packable small hatchet/axe, or a "tomahawk"? I know we have throwing tomahawks at camp in the summer, I think they were made a long time ago. For a small portable axe that you can pack, I have an old wooden handled Plumb Hatchet, that still takes a nice edge, and I've used since I was a boy. Lately, I find I carry a small Gerber Back Paxe. It's relatively light, and compact. It has a glass filled nylon handle, I'm not sure how I'd break it if I wanted to. It was about $30.