If you've got a Macbook Pro you know that yes, that strip above the function keys gets uncomfortably hot during processor-intensive tasks. That's fine with me since my fingers are never up there anyway. But it bugs "lifehacker" BenriHacks, who thus devised a coin-based "thermal management cooling method:"
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I doubt that it makes enough of a temperature difference to affect your machine's performance. But I can totally see someone running with this idea and designing a "cooling bar" and throwing it up on Kickstarter. I'm picturing a thin strip of walnut with a copper rod embedded within it, and it will be branded "artisanal" and have a rich brand story behind it. Just you watch.