You can use this one, if you like.

There are a veritable plethora of small devices to plug into your computer that heat things up. Coffee cups, heated gloves, etc. This is not an entirely ridiculous idea - your computer has a reliable 5 volt power supply, and this is vastly more efficient than running separate devices for those purposes.

But still, every new device pulls current, wastefully, through the computer's power supply, creating more heat and wasted power on the way through.

The last thing computers need is more heat - a great deal of energy is already consumed cooling the things down.

So, surely, there's some way of either piping the CPU/graphics card heat directly out to whatever needs heating, or, alternatively, converting the heat to electricity via some kind of Stirling turbine.

Did I dream a recent article on exactly that? I seem to recall that you can in fact create current by applying heat to a Peltier, which makes sense.

jai.
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