How about "subdocks", or "minidocks", or even "paradocks"
The way I read it, "dockies" are much cooler than just
subdocks. "Dockies" are custom render hooks.
Hey, "
Custom Render Hooks". That's catchy.
So for example you could have a dock item that is the
visualization window for your mp3 player, or have
a dock item that displays the contents of other virtual
screens, or shows you what is coming through your
TV card right now or ...
Anyway, that was my take on it. Check out the "lens"
item in the dock on the screenshots.