Since this question hasn't been asked since Sept 27, 2009 - I would like to bring the question back to the table. I'm currently looking for plastic tubs that are large or attach to each other rather snugly and/or make my own basin out of wood and plastic/rubber sheet. My design Idea is to include real/actual water in a city display where the city itself all inclusively sits in a tub of water where there will be a sewer/water system under the city, a subway and a boat wharf of such. The water would be held at 1 level in order to make the wharf look correctly with respect to the city but at the same time held back from the subway area and/or end the water section half way under the city, etc. Thoughts, comments & ideas welcome. Currently still stocking up on bricks for the city. It will be SNOT roads, no base plates, all brick built and only square intersections in order to avoid the terrible brick built rounded turns. Thanks!