I have a simple setup for when I camp in an areas without electricity.
A large deep cycle battery running to a DC inverter.. attach a splitter if needed... not a power surge protector because they have their own draw. I've never tested it beyond 3 days but I have ran 2 small fans while we slept and my christmas lights when i wanted. Just shop for the biggest fan with the lowest amp usage and do the math. Keep the battery and inverter in shade or under reflecctive tarp if you can. Doesnt hurt to keep a trashbag handy for weather.
If you were to disconnect everything during the day then attach a small DC solar charger then I'm sure you could run a box fan and a laser show every night.