Faraday cages around anything electronic that you care about. Honestly though, your digital media is going to be the last thing you are going to care about as y

Faraday cages around anything electronic that you care about. Honestly though, your digital media is going to be the last thing you are going to care about as you are starving to death with no water, heat, power, and armed people roaming the streets looking to take all your provisions. Your faraday or powered down devices also won't prevent them getting destroyed in a neighbourhood going up in fire either.