GideonTech has checked out a heat dissipating laptop desk from the folks at Lapworks.

The rubber surface prevents your laptop from skidding right
off your legs. I ran my fingers across it a few times to see if it
was easy to pry pieces off the rubber. None came off thankfully.
Notice the channels between the raised rubber pieces. These channels
allow the heat generated at the bottom of the laptop to dissipate
through the sides.

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