I'm interested in the fstab idea, although I think such tools already exist but it would make for a nice learning project for me.

What about some sort of Desktop Usability Enhancements projects that applies the art of user interface design to one of the gaint DEs: KDE and GNOME. Such project would try to identify and tackle usuability problems that hinders linux adoption on the desktop (and hence the enterprise). It's a _big_ thing to do, but yet non-tradtional.

An apache configuration tool would be a cool thing to do (but google about any OSS similiar tools 'cause you might find a nice code base for that somewhere). What about configuring apache via XML? you could research the cons (slow?)and pros (more concise?) of such thing.

for the server-side your best shoot could be at application frameworks or RIA (see RIA on WP)applications. Web application frameworks' mantra was "rapid and easy development and maintainace" be it an MVC implementation or a rich UI framework. Using a framework usually entitles some redundant and tedious tasks (editing configuration files by hand, creating stub classes that extend application framework extsion points and so on). So why not write GUIs for such tasks? integrate them into mainstream IDEs?

and finally the TODO list for your favorite F/OSS application is setting there waiting for contributers!

be creative!