Fantastic. You will not throw your plastic bottles in the trash again!

5. Air conditioner

You can make your own air conditioning with plastic bottles. You just need a fan and two bottles of iced water. Sometimes, the fan removes hot air and does not cool the room but now we have a solution for you! Fill two large bottles with water and freeze until ice. Then, place the bottle on the floor or on the table for a high fan. Put the fan behind the bottle and the fan will blow the cold air as the frozen bottle causes the temperature to decrease.