I know this is not a weapon but I thoult I might beable to post it here any way.
     I was wandering what primitive man used for water containers and cooking. thanks

Water containers are often made of the inside of animals, or bark.  There are lots of nice containers that can be made of birch bark, from simple folded pails to winnowing trays and that kind of thing.  Other bark works as well, of course.  In the southwest USA, often very very tightly coiled baskets would be used to hold water, or less tightly woven ones with a coating of resin on the inside to waterproof them.
  Obviously, you can't place any of these things over an open fire, for boiling, that kind of thing.  That's why we use a technique called "stone boiling", whereby you fill the container with water, heat some rocks in a fire, and then put them in the water.  By repeatedly taking rocks out, putting new hot rocks in, you can quickly bring water to the boil without screwing up the container.  (You need a special tool to lift the cold rocks out of the water, but it's simply made.)  You can use the same method without water to stir fry, by putting the ingredients in the dish with the hot rocks and stirring them around, so that everything cooks.
  You don't really need a container, because you can just steam everything under a fire if you have to, or roast it on sticks in the embers.  (That's my favourite method, to just skewer everything, meat, insects, roots, whatever, on a long stick and put it in the embers of a fire, preferably of alder wood.)