Want to have your own Wiki or Blog System on a USB-Stick to organize your notes, to-do lists, whatever? MediaWiki is one of the best software to do this (used by Wikipedia). You can get your own portable wiki running in about 15 minutes!
1. get the Uniform Server package:
download the zip archive and extract it on your usb stick. (Or better to a crypted truecrypt volume on your stick if you want to secure you data)
2. get Mediakwiki
and extract Mediwaiki to diskw\www
3. install your wiki / blog software
for software with web installers, just point your browser to it:
using other software you might have to change the config file manually
This is the quick and dirty version. You might want to change some details especially regarding the security settings!
A detailed guide is available here.