Simon Mackie over at Web Worker Daily lists 5 inspirational workspaces. My personal favorite on that list is the Rambling Renovator's Office Space primarily because of the lime green on the walls.
However, a single laptop will probably not suffice for me. I have found that I need 2 monitors to be productive and I am contemplating on getting a bigger 3rd one to get Aptana IDE to fit.
I would probably throw in a few elements of Stefan Didak's Home Office into it and it would be perfect :-)