The PocketMod is billed as a "free disposable personal organizer", and is a very cool Flash application that lets you design a pocket-sized 8-page notebook from a single sheet of printer paper. You can choose designs for calendars, to-do lists and such, drag them around to different pages, then print the page, fold it and go.
I loved this as soon as I saw it, but I first wanted to test this for a few days before making any recommendations. I'm not giving up my Sony handheld computer, but PocketMod notes worked great for impromptu notes that I could easily transfer to my PC or PDA later.
Chad and others at PocketMod are adding new templates regularly, and they report that a new version will be released soon that will allow us to design our own pages. I can't wait!