Well, they make laptop fans that go under the laptop. They don't make the one I use anymore, but ones that raise the laptop off the ground are usually pretty good.
I've used one, it barely helps, maybe delays my crash by about 2-3 minutes. Is there a way to turn off the Nvidia graphic card (by uninstalling the drivers) and just use JUST the integrated instead? Or will both be used regardless of uninstalling the Nvidia drivers?