This finally prompted [tangentsoft] to take matters in his own hands and run some tests on DIY Heat Sinks. The question that sparked this debate was if a paper clip is a good enough heat sink to ...
He added heat sinks to the SoC, Ethernet/USB chip ... to prevent any air gap from coming between the chip surface and the aluminum. He measured the result as a 17.3 degree C (31 degree F) drop ...