When I moved to SF, someone told me that the three most important things you can do for earthquake safety are:

- make sure nothing can fall on you when you're in bed (no mounted artwork above the headboard; no lamps etc on side tables that are high enough to fall on you)

- make sure you have footwear in your bedroom, so you can be mobile if there's broken glass everywhere

- store extra drinking water somewhere (I used a 6-gallon carboy that I periodically refilled)

Probably there are other good things to do, but all those made a lot of sense to me. Most of us spend more time in bed than in any other fixed location, so making sure the bed is a safe place rings true. And water is life.