For less than $10, you can make this DIY air conditioner from makeuseof.com. You will need a styrofoam ice chest, a cheap fan, and two PVC joints or flexible dryer vents. Place the fan face down ...

On hot days, you can make a homemade air conditioner ... the water and replenish the melted ice cubes. Read also: Cooling tips for when the air conditioning fails Ancient Persian qanats: Cooling ...