When organizing supplies for an earthquake, remember that you need to get to them after an earthquake has turned your house into mess. Store supplies in an easy to find location that has a minimal chance of being buried under falling objects. If you are short on space, a large trash can makes an excellent storage container. If you live in an apartment, the container can be hidden under a decorative tablecloth.
Earthquakes can happen at any time.
If not, make time on your calendar.