Sorry to dig up an oldish thread but I'm still catching up from when my system needed repairs.
Space and money are limited here, so like most things my table had to do double duty and be built as funds allowed. This is what I came up with.
I bought folding metal legs at CT (http://www.canadiantire.ca/AST/browse/3 ... ?locale=en
) and then attached them to a 3/4" sheet of good one side plywood. I glued corner guard (http://loghomeshoppe.com/images/product ... corner.gif
<- top one) all around the outside edge, and then sanded finished everything in marine enamel. This is now the base of my multipurpose/need more surface space/game table.
I purchased 1/4" sheets of plywood, removed 1/2" from one side to accommodate the trim and cut them into approximately 2'x2' squares. On each of these I glued 1" pieces of pink Styrofoam or whatever base material I choose (not a traditionalist but we have fun) and created a basic terrain of squares that can be turned different ways, and assembled as small or large as the players choose. I try to do 8 squares of each terrain type so that the maximum game space can be completed but we do have some types that are only 4 squares each.
One closet with 1"x2" straps on each side and 1/4" hardware cloth stapled to them for makeshift shelves gives me lots of room to store the terrain squares and buildings and assorted odds and ends I want to add or remove. The table folds up flat and goes behind the couch.
Just because you can do something, doesn't mean you should.