write an encryption program. not a super highlevel one. but one that works like this
User inputs password to log in, after that, he can right mouse click a file and hit a tab that will now be ther that previously wasnt that says somthing like encrypt this file. or add to safe box. or one when the user can have a window pop up for him to drag files into for encryption. when he is done, he simple logs out and files dissapear untill next login.