I don't want to use synthetics. I want something that is compostable/biodegradable, because I don't want it to wind up in the landfill when I'm done with it. (Yeah, I'm resigned to $$$.)
Cotton wadding! (thank you for the search term!) Is that the same as batting? Or is wadding thicker?
I think I want to minimize the number of layers, because bunching? (I'm currently using folded blankes & towels, which...sorta works? Ish? But is not comfortable.)