I have a desk fan I bought and I just turn it up all the way and aim it at my head. works pretty well. cools me down in about 15-20 min. make sure any papers on your desk are weighed down though. I set mine up in my comapony's library and surf the web a bit while I cool off.
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"Think of bicycles as rideable art that can just about save the world". ~Grant Petersen
Cyclists fare best when they recognize that there are times when acting vehicularly is not the best practice, and are flexible enough to do what is necessary as the situation warrants.--Me