WeeNotes for Notification Center allows you to write notes in LockScreen

  WeeNotes for Notification Center is a tweak launched last night in Cydia, and through it we can add a widget to the LockScreen that displays the application's notes Notes. The widget is implemented using the plugin LockInfo, so you must have it installed, and it takes the notes directly from the Notes application, no matter how many are available there. You can scroll through the notes, if you have several, and clicking on one will open it in a new screen.

This LockInfo plugin will display your latest notes on your lockscreen in case you need/want to use them as a memo. It is based on Notes for LockInfo (Native) which won't be available anymore from LockInfo 5 (LIV) due to changes in LI. If you're a previous owner of a license from that plugin, email me for a free update. NotificationCenter addons can be configured from the Settings app, in the Notifications panel.

  WeeNotes for Notification Center is available for $0.99 in Cydia's BigBoss repo.