If it's gotta fit inside an Altoid box, then I guess you may be down to grooming scissors. I guess your cover story would be you require a good manicure even when civilization has fallen apart. You may have to be totally flamboyant when giving this excuse to make it convincing.

If you allow for something a little bigger, perhaps some sort of forged scissors could work. They are entirely made of steel, and I suppose if you have a screwdriver you can take them apart and use them as blades. Here's a small one:

http://www.amazon.com/Gingher-G-4PS-4-In...824&sr=8-14

or maybe try the smaller of the high-quality Mundial sewing scissors:

http://www.mundialusa.com/sewing_individual.html

I guess your cover story would include stitching together fetish leatherwear in a Mad Max situation.

I personally haven't had experiences with any of these except the grooming scissors. And yes, I require manicure in earthquakes, floods, zombies, etc. You can't take apart and put back together a 1911 pistol otherwise.

Da Bing