Ok where i come from it gets hot.
Homemade swamp cooler box fan.
Swamp coolers are not complicated pieces of machinery.
Swamp coolers are examples of evaporation heaters.
A styrofoam cooler makes a great diy air conditioning box as the holes are easy to cut and the coolers are cheap to buy.
Turn on the fan and put your bottles in front of it.
Set the bottles 6 in 15 cm in front of your fan.
They are essentially fans that blow air through pads soaked with water.
The air will cool down as it passes around the bottles.
This video demonstrates how cool the air being circulated can be.