It's too hot! But I have a solution! While air conditioning is great, sometimes you want a blast of cool air in your face. You can now do it for free!
Step 1: Tools and Materials
Old USB cable (mine is from a dead mouse)
12 volt industrial fan (NOT a computer fan!) or a 5 volt fan
Heat shrink tube
Step 2: Prepare the Cables
Cut off the end of your USB cable and strip the outer jacket. Strip the red and black wires and cut off the rest. On the fan, cut off the connector and strip the wires. Tie a knot near the end of the USB cable. Set the parts aside.
Step 3: Soldering
Slip the heatshrink tube over the wires, then using the flux and solder, solder the black wire to the other black one, and the red one to the other red one. Slip the heatshrink over the connector, then heat it with your heat gun. Wrap with electrical tape if desired.
Step 4: Cable Ties
Use cable ties to attach the knot in your cable to one of the fan mounts.
Step 5: Use It!
Plug your USB fan into a power bank, wall charger or computer. The fan draws less than 500ma, so it is USB compliant. In all of these pictures, the power bank is powering the fan as my ancient computers lack a USB port. I have also used it on my custom built Windows 7 computer using a MSI A68HM-E33 V2 motherboard, and my MacBook Air. By the way, if you want specs on my custom built Windows 7 computer, leave a comment!