Something along the lines of one/each/all of these programs would be a great addition to the portapps suite.
Keynote - http://www.tranglos.com/free/keynote.html
screenshots - http://www.tranglos.com/free/keynote_screenshot.html
Quicknote - http://www.quicknote.de/
screenshots - http://www.quicknote.de/qscreensen.html
Stickies - http://www.zhornsoftware.co.uk/stickies/
screenshot on main page
Brian
EDIT - found a few here http://portablefreeware.com/?c=16&sc=59&p=1
(including stickies)