USB powered fan
You know it is getting so hot in London now, that I am almost tempted to shed my thermals. Protecting me from the horrors of a sticky keyboard though is this new-ish USB powered FlyFan from Kensington. It is just about powerful to keep a mini breeze going through the room and quiet enough not to be too irritating
Yours for £10, or if you are lucky enough to live across the pond $10.