Have a gander at the
Survival Vest thread for some more ideas.
You can generally survive 3 days without water, 3 weeks without food, so these aren't absolute priorities for my survival kit. IF I am flying in a remote area, I'll carry extra water as a matter of course, but for immediate survival, it isn't necessary.
As part of the RAAF Combat Survival course we had to do up our own personal survival kits, and at present, mine contains the following:
A flat signal mirror, taped to the underside of the lid. A shiny piece of polished steel/aluminium is more than sufficient.
3 unlubricated condoms. These will hold around 3L of water when placed inside one of your socks.
A tiny ziplock bag of small fishing hooks
A 2" diameter, reel of fishing line & hook
Small bottle of Puritabs (water purification tablets)
Small box of matches
A matchless fire-starting kit
1/2 dozen safety-pins
Small ziplock bag of sinkers & swivels
Wire saw (two keyrings either end, and diamond wire in between)
Razor blade
2" swatch of DPCU fabric
Small cardboard with various green cotton wound on it, and needles
Sharpening stone
Space-blanket
Bear in mind this kit was fitted out for the last exercise we did - coastal survival and doesn't contain the Leatherman, Mini-maglite that I carried on my person, or the magnesium firestarter that died after saltwater immersion. It's packed into a tin that's about an 1x2x6 inches.
For the kind of flying I'd be doing in Australia, the fishing tackle could probably be dropped freeing up a significant amount of space. To replace this I'd probably include a laser pointer and a few button-batteries and maybe a tampon or two to plug severe bleeding, maybe a roll of electricians tape, red or yellow if possible. Maybe even a small pack of lifesavers or something for that morale-boost you need right after realising you're going to have to drive
another million rivets...
![Big grin :D :D](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)