I don't currently carry my HHKB anywhere. It stays home with me. But I do have the HHKB hard case, just in case, so to speak.
I don't have a retractable USB cable for the HHKB, but I'd really like to get one, now that I see the one in iMav's picture.
No need for a laptop stand, since I don't have a laptop, but I expect that to change in 2008, so I'll be looking for a stand to put my new laptop on.