Ok I've been giving this a lot of thought and here is what I have come up with. The #3 must have for survival is a good bow! You can hunt with it and you can also defend yourself in a pinch. It's a silent killer but very affective with practice. #2 is a good knife! Now most of y'all will agree on this because of how handy a good knife can be, so I'm not going to go into a lot of detail since it's pretty much all been said! Now the #1 survival tool is a good axe and here's why. When the SHTF and you can't find or afford much anymore we will go back to the primitive way we all should know! The axe plays a huge part in this because you can use it to chop wood for shelters and fires to stay warm. You can also use it to skin animals if your knife gets lost or brakes. You can use it for defense or to carve a boat! There is a lot of stuff the axe can be used for and I've just named a few!