DIY Cooler Air Conditioner- you just might need this for #FasterHorses in July!
Simple, cheap air conditioner. You put ice in it, then turn on the fan... And you get cool air for your tent! (Don't forget a power source). You just have to keep loading it with ice! Oh, and stop grabbing the ice for your margaritas! #camping
swamp cooler, Portable 12V Air Conditioner --Cheap and easy!
How to build a DIY Air Conditioner, aka Swamp Cooler for cheap. Cool a small room or tent. Perfect for camping. A Great Hack
How to Make an A/C Unit for $15 #DIY
How to Build Your Own Air Conditioner Fan
Actually, that's really clever...I can see that it would put out cool air if you're sitting close enough to it.
Summer DIY Projects: How To Build a DIY Air Conditioner
Redneck Air Conditioner and 15 More Ways to Keep Cool in the Summer
Tent Air Conditioner - Swamp Cooler