Laptops' CPU and GPU overheat a lot sometimes, and If you don't want to watercool, you can add fans! In this I'll be showing you how to make your own laptop cooler! You'll need the following:
Some kind of building material (Try for plexiglass or Lexan)
DC Power Supply
All of these you can obtain through eBay or the dump. I got my soldering iron, solder,switches, and wire from Radioshack, the fans and DC power supply from eBay. The links are below:
DC Supply - http://cgi.ebay.com/AC-100-240V-DC-12V-Adapter-Converter-Power-Supply-New-/270575442566?pt=LH_DefaultDomain_0&hash=item3eff8d9a86 (It has 1000MA of power AKA: 1A)
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=190468751856&ssPageName=STRK:MEWNX:IT (Not the best airflow, but it was cheap, if you want a better fan go buy one.)
Now, the number of fans you want to use is up to you, just make sure you have enough AMPS on your supply.