Ok, so right now I'm young and (somewhat) stupid, but eventually I plan on saving up enough to build my own home. Nothing fancy, just a small modest house that could be added onto when kids arrive. My question is this, if one starts from scratch with a home design, what features would you design into a house for when things turn ugly? So far all I have is a concrete room in the basement, if nothing else it's great tornado protection. Any other thoughts?