So I will start with the list of things I already have saved from surfing this sub
http://www.amazon.com/gp/product/B00A3Z44RW/ref=oh_aui_detailpage_o00_s01?ie=UTF8&psc=1
These are great to put over your tent to keep the light and heat out in the morning so you dont wake up in a sauna at 7am
And finally, I will never attend another festival again without this stuff, it is a foaming body wash that does not require water. We use it at my work all the time for bed baths and whatnot, so I thought I would try it for a festival and it works quite well. It doesnt get you as clean as a normal shower but this and baby wipes can keep you feeling fresh the whole weekend (just dont use it on hair)
http://www.amazon.com/gp/product/B00K2SM512/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1