Traditional screen savers usually serve to simply entertain us. Now all that time spent by your screen saver can be put to use. Get the (Screen + File) Saver by Clear-Cut Computing and put your screen saver to use today. You simply configure this screen saver for the folder(s) containing the source files you want to protect, and then set the destination folder(s) where you want the backup placed. The next time your screen saver kicks in, your files will be copied to the destination location. When you return to work and interrupt the process, the copying stops. Leave the computer alone, and when the screen saver starts up again, it resumes where it last left off. (it actually backs up any files where the modified date is more recent than the last time it backed up.)
Version 1.51 has fixed ability to overwrite read-only files in destination folder.