Great to see all these ideas

I also modified my GuruPlug. If anyone is interested, here are my notes about
improving the cooling and
making the fan more silent.
@Rexyboy: my fan is still a little loud. A bigger fan like yours would be another big improvement i think. Is it a ball bearing fan like the one built into the GuruPlug or another bearing type? Is it just a 5V fan running at full speed?
mfg