I've used TMI and NEI many times in my SMP adventures, but I always find myself thinking "Well, I can just cheat in a few Stone to build this house. I mean.. I can get it easily anyhow so it's not really cheating." A little cheating opens the door to massive cheating like building entire structures in Creative mode and re-gifting myself items after dying.
So the question is, how can I use an inventory mod to look up recipes without that mod tempting me with a "cheat mode" button, or Creative mode toggle?