Fans are used by millions of people to combat the heat. They are an economically viable solution and can relieve you from the heat as well. However, there are many lazy folks around who find switching the fan on quite a hassle. An Instructables user came up with a solution for lazy folks by creating a fan that is temperature sensitive. Check out the details below.
The conventional fan is provided with computerized power via Bluetooth-controlled battery known as LightBlue Bean. You can get it here
You will need a power switch tail, a battery holder with two AA batteries, some wire and three yellow buttons.