RPGMapShare, Dundjinni Forums, WotC forums, or the Holocron. Some of the things I have drawn myself, but if someone already has what I'm looking for then I'm not going to "re-invent the wheel." I've also grabbed pictures from Star Wars sites and cropped them to what I need.
I'm going to have to slow down some, but here are two more modules: another cargo hold and a detention block module.
The detention block cells are a bit small, but detention blocks aren't known for their comfort. However, I am considering redoing the crew's quarters to put a few less people in each room. [It doesn't make much sense that I crammed 4 crewmen into the same space I put 2 prisoners.]
As requested, here are some stairs for multi-level purposes.
I'm not sure where exactly the stairs could go, but I imagine one of the corridors near the command module. I see good things about the level of detail, but if you are going to make it two+ levels you may want the basic layout blank:
That will make it easier to add the stairs wherever you feel like. Perhaps I should make a "stair/turbolift" module so that the location of the stairs aren't an issue.
Finally, here is the map our group is using for our next session - complete with grass and ramps. It got a little grainy when I converted it to a .jpg file.
Again, comments and criticism are welcome. I'm working on the ideas already presented. But if you have an idea, I take requests.