I'm attempting to keep a track of what I need for the table - streams are going to be a problem.
Fortunately, I can make lots of swamps from used CDs and DVDs.
As the height is not a very pronounced one (see the previous post), I'm planning to build it out of a 6mm or 10mm styrene sheet.
I've used the above image from Wikipedia to kind of get the measures right. Of course the villages will differ in size, and as the units themselves are a bit compressed, all other terrain pieces will probably need some resizing.