Never store salt in metal containers. Salt leaches metals and/or elements out of the metal. You could wind up with a poisonous substance in your salt. I discuss reasons to store salt and provide step by step directions for storing it.
Shut-off wrench: If you have natural gas power in your home, it will need to be shut-off. Otherwise it's a safety hazard. 20 Emergency Preparedness Items You Might Not Think Of (And the resources to purchase them frugally): good list