Contractor bags
From Burnwiki, a Burning Man Wiki & Brain Dump
Contractor bags are very heavy duty trash bags. If you have stinky, gross trash that you'll need to haul out, then do it in these! Most can even handle solvents such as gas and oil, in case you have been having too much fun with flammables, or have a busted generator.
In a pinch, contractor bags can be used to line a leaky cooler, or even to create one out of a cardboard box.
