Standlone wiki on a USB key?

[andygates]

My ISP is down.  There is vexation among the masses, particularly as I need one set of contact details soon or a real-world transaction will bork.  C'est la risk of putting a bunch of stuff on a wiki online; it's available everywhere, but it's very unavailable if the ISP does the dying fly.  So I'm sat here like a lemon, fighting the urge to go to treeware despite its many and obvious suckings.

"Munky!  We need more technodgeoly"

"No silly man, we need better technology."

A wiki is my preferred freeform PIM.  Perfectly good wikis exist which just use text-files as their data.  Here then is the spec for my downtime-inspired disaster-and-zombie-apocalypse-proof PIM from Hell:

• Phyisical hosting on a ruggedised USB stick with a universal (Windows & *NIX) file format; a device that'll survive being on a keyring, thrown into a bike bag and puked on by the cat.  Repeatedly.
  
• Text-based data storage.
  
• Two executables which can serve the thing, one each for Windows and *NIX. 
  
• Some security measures on the stick; HTTPS on the served pages.
• Absurdly clean vanilla HTML so it'll run anywhere.

Okay, the IronDrive is rugged (nuke-proof, even), but at $700 it is full of fail for my non-milspec budget.  One of the great things a popcorn device like a USB stick is that you can clone it and bury one in your ammo cache for when the zombies come.  That'd be $1400 and even with the dollar tanking, that's just bonkers.  Maybe one of these cute Iocell ones.

But for putting software on a stick, I become once more the eternal noob.  Any ideas?