When this Manhattan investment company decided to mirror its critical data off-site, the IS staff built their own T3 and T1 routers. How did that work, and would they do it again?
Port-scan your own hosts to find misconfigured and unauthorized services. Put all that data into a database, and you can keep track of thousands of systems.
Tweak your system to make photo colors accurate, and more. Now you won't get a nasty surprise when the photo you send to Linux Journal shows up all wrong.
Your old real-time operating system made you do a lot for yourself as a driver author. Take advantage of the facilities Linux offers and clean up some spaghetti code while you're at it.