These were very common sight hanging off bull bars (mostly trucks) when I was a kid: https://www.collectorsweekly.com/stories/228740-australian-outback-canvas-

These were very common sight hanging off bull bars (mostly trucks) when I was a kid: https://www.collectorsweekly.com/stories/228740-australian-outback-canvas-filter-water-b https://www.collectorsweekly.com/stories/228740-australian-o... I dunno if it is just an Australian thing.