Open Question: Camping>>>Where can I find a mini battery powered A/C or A/C fan for tent?

I am going camping a few times this year and plan to buy a couple cots to make sleeping easier this year. I need a REALLY good battery powered fan, or definatly an mini Air conditioner for my tent. Can any one help me out? I dont wanna spend more than $70 on it. And I am only getting picky because everywhere we have camped there are like 20 ppl around being loud every morning at 6 or 7am, leads to me staying up with my company til 4am to get the most quiet time out of the trip>> in need of actual sleep when i go camping.

Source:
http://answers.yahoo.com/question/index?qid=20110317185325AAsaYhq

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