Pre-Order Cool My Camper Air Conditioning - smallest/ most power light camper AC i've seen - could connect to main battery and run as van AC - might be cheaper/easier than installing a standard AC system - probably cheaper overall to just not be home during the day
Off-Grid Appliances - Portable Reverse Osmosis Water Purification, air conditioners, Solar attic fan, etc.
Simple Cheap Air Conditioner-- This would be nice after a hurricane if the fan was battery powered. Neat idea for personal cooling. I'm sure it wouldn't cool an entire room, but a couple of these would be nice to help out since the heat after a hurricane is usually unbearably hot.
Vehicle battery driven 12v 24v electric air conditioner for trucks and vans Airpro 2000 DC powered truck air conditioner for truck cabin is the high efficiency 12V/24V battery-powered air conditioning system that keeps truck cabs cool. DC powered truck A/C for sales http://www.guchen.com/electrical-truck-air-conditioner/airpro-2000.html