Well, since your stock in trade is info and info is a valuable tool, I'd say a well written cheat sheet of survival tips geared toward short term survival on waterproof paper that could be folded or rolded and attached makes sence.The one thing that I'd add to the cheat sheet is a sun compass, to use as backup.( John Veltman makes a good one that David Alloway thought well of)

Happy holidays, Mike