Step 1: Split safety into "during" and "after."
Some devices matter the moment the ground shakes, others matter once the shaking stops.
Step 2: During the quake.
A strong table to shelter under, and anchored heavy furniture, reduce the chance of injury from falling or toppling objects.
Step 3: Right after the quake.
A stocked emergency kit (torch, first aid, water), a battery-powered radio for updates, and a fire extinguisher for any fire risk help manage the situation safely once the shaking has stopped.
Final Answer:
Together, protective furniture, an emergency kit, a radio, and a fire extinguisher cover both the shaking phase and its aftermath.