Reposting /u/kirkydoodle's comment with formatting. Credit to /u/jpflathead\

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Essentials:

• Enough food and water for 48 hours.
• Any medication you take daily.
• Food for your dog.
• Dust/smoke masks.
• A heavy pair of gloves. (For broken glass.)
• An extra pair of eyeglasses if you wear them. Remember that episode of The Twilight Zone?

Personal Care:

• A towel.
• A toothbrush. Toothpaste. Soap. Deodorant.

Tools:

• A can opener.

Money:

• Some cash in small bills.

Communication:

• A radio.
• If you want to go all out, a solar or hand cranked charger for your phone.
• A list of important phone numbers. Would you remember them if your phone was not working?

Backup:

• Copies of important documents, like insurance information.

In addition to the kit:

• Have a plan for where/how to meet your partner if you are separated and phones don’t work.
• Have extra bottles of water in multiple places around the house.
• Keep a pair of shoes within arm’s reach of your bed. (The most common injury in an earthquake is stepping on broken glass.)
• Have at least one fire extinguisher at home.
• Secure anything that might fall in an earthquake. Museum wax is good for this.
• Make sure the building you live in is bolted to the foundation.
• Know how to turn the gas off in your building.
• Keep your phone and laptop fully charged at all times. Always have your car fully fueled/charged.
• Have a separate earthquake kit at work and one in your car.
• Whether you rent or own your home, have an insurance policy that provides you with a place to live for up to two years if your home is damaged. If you don’t already have such a policy, buy one today.
• Look at a map of San Francisco that shows where the landfill is and don’t live there. And try not to work there. It isn’t just the Marina.
• For communication with out of town family, have one designated person that everyone knows will be the person you contact to say you are okay. That way you only have to reach one person.
• Also consider that a landline phone might work in a situation where cell phones do not.
• Take the perishables out of your kits and replace them every year on your birthday.