I apologize for following up sooner than I had planned.
The major components to consider when building a tin are these (this comes straight out of the book I spoke to you about) Rather than just list the categories I threw in some gear options for you that he suggests.
Inova, Streamlight Nano, Photon micro light
Mini ferro rod, single trick birthday candle, fresnel lens several waterproofed matches and striking surface glued inside tin, one or two military style tinder tabs, military sparking device.
Small button compass
small signaling mirror, photon microlight variants have strobe and momentary pressure switch for signaling, morse code etc., titanium micro whistle like the Nitecore NWS10 whistle (120 decibels)
1 Condom non-lubricated it can be used to transport water as it is very strong and can expand quite a bit. To offer extra protection to the condom if possible you can stick it in a sweat sock that you might be wearing.
Smallfishing kit containing several hooks and 12-20 lb line wrapped around a small sewing machine bobbin, some A few small squeeze on sinkers small rubber lure.
Dedicated snare wire, or a military style wire saw that can be used as a snare, or a length of brass wire that will allow you to make your own snare
A small knife, I suggest Doug Ritter's RSK Mk5 (Ritter Survival Knife) I have it myself, it is a fixed blade designed for an Altoids size tin. I have seen people use it to baton through wooden branches when the were processing fire wood.
You might consider another small sewing machine bobbin for wrapping dental floss on, or bank line. that way you can bind together a wooden frame for a shelter. You could also wrap the outside of the tin with a length of 550 cord.
Tell me what you think of the book if you decide to pick it up. I have yet to get the revised edition
For anyone else interested in the book I spoke of it is called "Build The Perfect Survival Kit" by John D. McCann The book addresses everything from an Altoids tin to a vehicle kit for a car, airplane, boat, and everything in between. He runs the website http://www.survivalr...s/Products.html