Victorinox used to sell a knife and mini survival kit items that would all fit in an included leather pouch/sheath. I believe they have been discontinued now but you can still find some of the kit items sold as replacements here:

http://www.outdoorpros.com/Cat/Cutlery-Accessories/15/List

You can use the sorting feature at the top to get all the victorinox items together. The lead pencil would be especially useful with a few sheets of rite in rain paper. Not vital, but useful. There's plenty of other small items you may be able to incorporate and the price seems good too although I honestly haven't checked their shipping costs. No disclaimers needed as no affiliations, kickbacks etc. I found this when I was looking for a source for the victorinox mirrors. I didn't get the mirror (which I wouldn't consider for any but absolute last ditch scenarios; you are better off with the mirror from the Pocket Survival Pak.) but the other items appealed to the gear junkie/gadget junkie in me. Hope this helps.