About coffee grinds - I always thought that water is a no-no for the pipe?
That's one of the silliest of myths. You can thank Cardogan (and perhaps others) for printing it in their literature; thus it's become gospel to many. I often simply rinse out the chamber and airway, then dry and am good to go right after if I wish. (Though I tend to rotate so most pipes get several days rest.)
And when I use the sea salt and Everclear, I rinse it thoroughly after the salts no longer look gross (in hot water, drying immediately.)