Only partially to be contrary, how about these items:
Gallon metal pot - Okay, that or something similar seems to be a popular choice and not particularly contrary to the conventional wisdom, but I can't argue about how handy this would be for holding water and cooking. Hadn't thought of using it as a shovel before, but it's a great idea as long as it's made of stainless or titanium.
Bow saw, probably 30", and with a couple spare blades strapped to it if that's not cheating. Here's my reasoning: I love the idea of an axe, but I rarely use one and, even being EXTREMELY careful, the chance of injuring myself badly in a situation where I can't get help is just to great for me. On the other hand, there is the necessity of getting a huge amount of firewood and, if I'm going to be there a month, the need for a larger, more comfortable than a debris hut. I also believe that you use a lot less energy with a saw than an axe, and let's face it, replacing that energy with food won't be easy.
0 Degree Gortex sleeping bag. Folks, I know myself, and nothing is as debilitating to my sense of well-being than being cold. With a good bag I'll sleep well through the night without the need to get up every 15-30 minutes to stoke a fire. And I can hole up in bad weather much more comfortably and without worrying as much about running out of firewood.
Posting a reply on BladeForums that doesn't include a blade? If this scenario allowed another item then a good carbon steel fixed blade would absolutely be on it. Of the knives I have on hand, I'd probably take the Cold Steel Master Hunter. I've done a small amount of flintknapping and am confident that if there were suitable rocks around, I could make something sharp fairly easily. I've also made a few friction fires and lots with flint and steel and I think (but haven't tried) that I can get a good spark from the blade of the bow saw if I use a big enough flint that I don't cut up my hand. It would undoubtably take longer and more effort that a ferro rod, but again I'm confident that I could get a fire going. Wearing an extra cotton t-shirt that could be transformed to char cloth at some point would be helpful, though.
Finally, this is my first post to BladeForum. I have been a member of Knifeforums for years but for some reason never signed up here before this weekend. It's fun seeing a whole new list of topics and getting a slight difference in perspective.