Meet the Kniper: an awesome knife capable of replacing 22 tools. It is made of 420 high-carbon stainless steel and can serve as a saw, rangefinder, nail remover, wire stripper, bottle opener, fork, tobacco pipe, ruler, throwing knife, and more. Kniper is 13 inches long, 2.5 inches wide and 5.5 mm thick.
You may have to practice a bit to learn how to throw a knife properly. A tool like this can get you unstuck in the outdoors though.