To cool things down without electricity, charge a solar fan on your windowsill as soon as you receive a storm warning.
A solar powered fan?! What a great idea, I cannot wait to have one of these for camping or gardening!
Solar Powered Greenhouse Fan. #snapfans #greenhousefans #solarfans
On the more luxurious end of DIY bucket air conditioners
Solar Powered Fan in Chicken Coop
A solar ventilator to cool the chicken coop...add a solar powered fan and light just in case you need it.
#Solar Powered Fan to keep you cool on those sunny race weekends this summer!
You’ll Be Incredibly Surprised At How Cool This DIY Poor Mans Air Conditioner Will Keep Your Car, Camper, Tent, Or Room. Step By Step Instructions And Proof That It Works! | The Good SurvivalistThe Good Survivalist
Solar power - Off-Grid Appliances - Portable Reverse Osmosis Water Purification, air conditioners, Solar attic fan, etc.