User Review: Sea to Summit The Kitchen Sink
Source: bought it new
Price Paid: $25
Stable, high capacity, high compressibility. I recommend two of these for an extended trip.
This sink is a great addition to an extended trip pack. It's not really a fast and light item, but if you backpack in comfort then definitely bring it. It holds enough water to take a bath, do dishes, filter lots of water, or make LOTS of dinner.
I like how it bows out at the bottom, this greatly increases stability. Large top makes it easy to scoop water in and out of it, but watch out for fire embers and pine needles.
I have had this for a few years, and take it car camping and on all backpacking trips where my wife is present.