Geoffrey...we need to a better job of levels of readiness...like Sears in the old days, good, better, best. So at a minimum, both a grab and go and a stay at home kit would include... And a real list, toilet paper, some cash, what? Then you might add....and a list of things to consider, and how do you maintain these things.  And finally the best preparation would include... Because in truth very few have anything and we will be overwhelmed by the 7.5+ here in the valley as part of the big subduction quake.