The instructions call for a Styrofoam cooler, a personal fan, pipe fittings, as well as an old paint can and some tape. Of course, this guide is so simple that you could hack together some alternative materials if needed. For example, this woman built hers for $17 and used a dryer duct along with frozen jugs of water. Want a more advanced version? The video below shows how one guy adapted this design for a larger plastic cooler and even added solar panels! Check out the guide over here. How to Make an Air Conditioner in 5 Mins for $20 | Snapguide Featured photo credit: Guian Bolisay via farm4.staticflickr.com
