I bought a good 'free' app today over at Amazon. It's called InkPad Notepad and it is proving very useful for initial notes for a writing project. It's just a barebones notepad app but it looks like the old yellow tablet's that you can find in stationary at places like Wal-Mart. You can email a copy of your notes to yourself or save them to dropbox and not have to worry about losing them. It runs great on the KF HD6.
Inkpad Notepad