It's a bit of a cheat, I think, as it skips the need to even use paper to clean out oil to make a fire starter, so I doubt it counts (I can hope!). But if you use hardwood
ash when scrubbing an oily/fatty dish, it can turn the fat/oil itself into a kind of primitive soap, which can then effectively clean the dish. Like I said, it skips the paper step & it does TECHNICALLY make a primitive soap in the process, so if it won't count let me know. But I think this hardwoodash method is a very permaculturey solution to the fatty/oily dish problem.