My cousin was in the German Army and they have a neat nesting set of spoon, fork, butterknife and a gizmo that holds them all together that doubles as a can opener. It is heavy as all getout, but they work, don't bend, and the knife can be sharpened to the point where it will actually cut something besides bologna.
If weight is really an issue, I just take the spoon and use the knife blade from a swiss army knife. In all candor, how useful is a fork?