This is what you need (and a Breeze Fan):
Anker® Uspeed USB 3.0 9-Port Hub + 5V 2.1A Charging Port with 12V 5A Power Adapter
ARCTIC Breeze Mobile USB-Powered 92mm Portable Fan, Portable Cooling Solution, Quiet Fan - White
I have 2 USB hubs, 9 USB Block Eruptors, 1 Fan X2
If only Anker's worked with raspberryPi's