Not so much of a dock, but heres a stand i made acouple weekends ago.
Its made from aluminium and some brass.
The main thing i wanted was to be able to kick the nook up on end while i was at work to read eBooks but, also be able to have the nook plugged in to charge or plug in a USB drive.
Diffinitly have to be careful with the two "knobs" on the front which are used to hold the nook in the stand, to tight and you could crush the nook. So are its been working pretty good. The side knobs are used to tighten/loosen the stand to you can tilt the nook at different angle.