You know, just to be contrary, I think I'll take this one here:
Technically within the letter of the OP, and I get three sharp blades over 3.5 inches long and a saw.
I think that, with this, I could make the tools I need to get by. Spear, bow, arrows, bowl, spoon. It will skin an animal of pretty much any size. And it's got a kitchen-friendly blade for food handling.
Of course, let's understand going into this that you'd have to undress me prior to the exercise, otherwise I'd have another four knives on my person -- five if wearing my jacket.
But, as long as we're pretending, we'll allow ourselves to believe that I could somehow be caught with no knives on me, but I'd have access to a knife that's stored in a box.
You know, now that I think of it, maybe that's a thread in its own right.