First of all I'd like to thank the lovely and talented Don Ellis for "inspiring" me to spend even more money on camera stuff over the weekend. I think that I am now done.
I had been using an Artisan&Artist case with the DP2, and I really liked the look of the camera in the case. However, it makes the camera larger (though easier to hold) and you have to remove the case every time you want to access the battery or memory card. So I switched from the case to Richard Franiec's grip. So far so good, but I haven't really had a chance to try it out yet.
I also got the Sigma VF-21 finder to replace the Voigtlander 40mm finder I had been using. The Sigma finder is considerably smaller and looks better on the camera. It's also very bright and seems to work well even when wearing glasses. The only downside I can see so far is that the framelines seem to be smaller than the actual captured image. I imagine I'll get used to that fairly quickly, and in any case I don't see it as a big problem, but it's something to keep in mind if you tend to rely a great deal on the accuracy of the framelines when shooting.
Overall, I think I'm done dressing up my camera, and I guess it's time to take it out and actually shoot something with it. Now if it would just stop raining for a little while!