These have several advantages: they are lightweight, they are easy to assemble, and they are already painted. So I just have to glue them together and toss them into the bucket. I bought a total of seven buildings to give the impression of a small riverside village.
For the base, I am using my Cigar Box Battles desert cloth. I love these things. Again, lightweight and portable, but they drape well, and they don't pill up.
I'm still working on the layout of the whole setup. And I hope to get a playtest or two in before the convention. Next I think I need to finalize which troops each force will be fielding. I'd like to give most of them a vehicle of some sorts, because if not, I fear the minion quadcycle will race ahead to secure the landing stage with its machinegun. I might be able to use buildings to give cover to approaching companies though.