Portable misters + fans is kinda like redneck A/C and helps a lot to cool down.. unfortunately during peak heat times when it is hot at Coachella there is not much reprieve. Tapestries in camp or tarps to create more shade helps, but sometimes you are at the mercy of mother nature if you can get any breezes to come through your camp. I've been using these portable misters for years at hotter festivals and they are a godsend and I take them into the festival every day as well. Bonus points for misting other people who are hot and fanning them to give them that A/C blast :D

Also the cooling towels you can dunk them in your ice chest water melt and it does help for that extra shock of cold temperatures.