Flood Resistant Products

I have written recently about the growing opportunities for flood-resistant building products. Here is an exciting new product that addresses this need:
The High Tide Escape Hatch can be installed between roof rafters, and opens easily to allow people to escape through their roof. For anyone building in a low laying area, it has now become irresponsible to not provide this type of egress.

What new products will you introduce to address the concerns about flooding?