My mash tun is a cooler, so it only takes a quick rinse and a swipe or two with a sponge to clean it. My kettles (I use two on a stove top) only need a rinse (though a more vigorous one than for my cooler) and a few wipes with a green scrubby. So I haven't seen the need for a more elegant solution. But then again, I brew in my kitchen, so the sink is conveniently nearby; brewing outside could call for a more inventive cleaning process.