When I checked my favorite haunt for China Mieville fan-geekery, I found one of my fellow Bas-Lagians was creating a souvenirs of Perdido Street Station box, and had posted links to other kits for alternate realities. First, there is the "Wonderland expedition kit" based upon the works of Lewis Carroll which can be found at http://absinthetic.livejournal.com/776713.html. And then artist Alex CF has all kinds of goodies at http://alexcf.com/blog/?page_id=6. They include:
Edit: My titles keeping coming out in Hindi. I shall fix that.