I think this makes the third time I’ve linked to Jim Macdonald’s jump kits page.
A jump kit, also called a go bag, is an emergency kit you leave next to the front door so you can grab it on the way out without breaking stride. You should have one, because, hey, you never know. I’ve seen interviews with Hurricane Katrina victims who were sitting on their roofs barefoot because the water came up so fast that they didn’t have time to grab their shoes.
Coming at the problem from another angle, the United Methodist Committee on Relief (UMCOR) has a website about putting together flood buckets, health kits, and other special-purpose emergency packs to be sent to disaster victims.