Seriously, I've got a "grab bag" with about 72 hours worth of stuff that I keep in reserve. It contains some energy bars, MRE's, water, emergency/survival blanket, beeswax survival candles, etc.; enough to scrape by for a few days on the move, if necessary. If the emergency doesn't require us to evacuate the house, the wife and I have got a good supply of food/water, enough to last for a couple of weeks.