Flash, other than what the other guys have suggested I would consider a chemical toilet in your list. It could get pretty bad if your water was cut off following an incident of any type. I would also consider something like heavy plastic sheet and some wood to effect temporary repairs to any glass blown out, in fact while i'm rabbiting on about glass why not get some self adhesive film to put over any exterior glass to stop it shattering, therefore cutting down on the projectile hazard glass produces. Other thoughts, decent multi-class fire extinguisher about 9 litres of wet foam and a 2kg dry powder or CO2 for electrical fires.

I hope this helps and welcome to the discussion group.

Johno