JML, unfortunately even the largest of the new Pelican micro cases is only 8.3 x 4.3 x 2.15” on the inside, which is smaller than any PCDP. None of the otter boxes are big enough either.
cdub, was that a typo about having an otter box for your PCDP, did you maybe mean PMDP? I have a couple of the otter boxes for my MDP's, but none that I've seen available are big enough for a PCDP. You best bet would probably be one of the regular-sized Pelican cases, I think the smallest that would work is the 1150, available here
for about $20. A little bit bulky, but you can put CD's, small headphones, and other accessories in there too. I have several different sizes of the pelican cases, and they are wonderful.