Concentration Meltdown

The roadside display said today's temperature is around 35 degrees; a bit cooler than yesterday, but still really hot. I have all the windows open in the office, the fan on high, but I still can't get cool enough to concentrate. I'm daydreaming of going home to a nice cool apartment with it brand-new air-con unit.

Anyone have any suggestions, aside from taking out the shelves and sitting in the fridge?