1 Epirb (or cell-phone)
2 Knife (fixed-blade or folder)
3 Fire-steel
4 Poncho
5 something to cook in, like a mess-tin or billycan

I think everybody has got about the same idea on the essentials.
_________________________
''It's time for Plan B...'' ''We have a Plan B?'' ''No, but it's time for one.'' -Stargate SG-1