Chainmaille to clean your cast iron pots and pans?  Sounds crazy but it's true... when I first saw these online, I knew I needed to see if I could make one, and it turns out these are actually in demand by fans of cast iron cooking.  The stainless steel rings are strong and will not bend or warp during normal usage (one story online talks about the guy dropping his in the already running garbage disposal.  Despite the noise, a few rings were chewed up, but his still maintained its basic shape!)  I've supplied a link below to a video on YouTube of a person giving his review for one he bought on Amazon.  Mine is of the same size and quality as many seen there and elsewhere on the web.  I can also custom size them for you if you want something larger.

Cast Iron Scrubber - Stainless Steel - 5"x5"