An 8-litre collapsible sink that folds flat for storage.

A bucket is deep and narrow. A sink is wide and shallow, which is the shape you want when the thing you are washing is a twelve-inch skillet or a stack of plates.

Eight litres is enough to wash up after a group without refilling halfway through.

Flat-packing is what makes it worth carrying. A rigid basin is mostly air, and air is the one thing a loaded truck does not have.

Set it on a camp table, fill from the water container, wash, tip it out away from camp.