On 'Superscrimpers' the other night on C4 they reckoned the mesh bags that fruit comes in from supermarkets makes a good cheap (free) scrubber for pans. I gave it a try and they work brilliantly, took off baked on chicken casserole with ease. I'm going to replace the sponge scourer in my brew kit with one. Not sure of the longevity of them but time will tell.