I'm gonna attempt to make a knife or two this summer I think. I've found some good sites that give pretty decent directions on how to make a simple but functional knife. All ya really need is an old file, a drill and bits, small saw with blade for metal, some wood or bone for the handle, some kind of rivets and epoxy for securing the handle to the knife, and a fire and oven to temper the blade. The directions seem failry simple too. I should try to dig up the links quick.....

Here's one for making an antler handled knife....http://www.primitiveways.com/pt-antlerhandleknife.html (sorry can't get this one to link for some reason)

Here's another on making the actual knife...http://everything2.com/index.pl?node_id=1727161

If all goes well I'd like to do a little mini-class for my old Scout Troop.