I use a monopod instead of a tripod, this provides one more stable point other than my hands, when shooting the moon. I use IS on my lenses as well, and run about a 1/200, 1/250th shutter speed just to be safe, and change the other two attributes as needed. On a DSLR, you could try the mirror lockup as well, but I have found no advantage with that myself.
a. Merging frames can give you a fairly nice image.
b. Using stacked TCs is challenging but rewarding when you can nail the combo down.
c. There is actually quite a bit of color on the moon, so try not turning the image into a B&W.
d. Finally as Tom stated, sometimes getting terrestrial elements around the moon is also very interesting.