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This is way too simple for a instructable!

The main idea is to keep you coffee or tea warm at the office, there are many devices that use USB power to do that... but your computer already generates heat so... and mine is a i7, they get hot easily.

I grabbed a old pentium heatsink and put it in front of my laptop heat fan, it gets incredibly hot!
I keep my laptop elevated from the desk so in this case i had to improvise some legs with a clip, to keep it just in front of the vents.
I keep it there always, so when I go for another cup of coffee it is already hot :-) it's been my companion for almost two years, especially in the winter.

If you use a bigger cup or a mug, try to get a bigger heatsink, and it gets even hotter if you put it with a slight angle.

Enjoy your coffee! or whatever keeps you awake :-)

<p>can you make it usb powered by running current through a processor or something?</p>
<p>I gess so... but you wold have to find the pinlayout for the specific processor, to power it up, and make it process something :) harder benchmarks for higher temperature XD<br>That wold be like having a ferrari motor running in the livingroom to heat the house. :)</p>
<p>This is so true lol. Maybe you could have your processor exposed and rest your coffee cup right on top of it. Better yet, have your processor liquid cooled and use coffee as the liquid HAHA! </p>
<p>If you get your hands on a small peltier, you can put the cool side on the fins, and the warm side up, and it will surely keep some coffee warm. I guess if you found a 5v peltier you could absolutely run it off the usb.</p>
<p>If your usb is able to supply 4 amps you could try this one </p><p>http://www.amazon.com/19-4W-Thermoelectric-Cooler-Peltier-Cooling/dp/B00OM0WNEU/ref=sr_1_1/188-9827183-1624849?ie=UTF8&amp;qid=1437400956&amp;sr=8-1&amp;keywords=5v+peltier</p>
<p>Haha this is clever. I bet if you had a heatsink with larger fins you'd get even better results. Nice work.</p>
<p>Yep! I gess so, that would be interesting to measure... the temperature after 5 minutes with this one, and then with another (bigger fins or larger surface) for 5 minutes too.<br>Computer power sources usually have big heatsinks... desktop processors too :)</p>

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