I'm wanting to make a mechanic's scrubby bar for friends/family as Christmas gifts and was trying to think of different things to add besides something like poppy seeds or pumice. I got to thinking that both burlap and jute are scrubby and maybe those might work but the lye might eat them up? Did some Google searches and used the search function on here but only came up with packaging options instead of in-the-soap options. I've also got loofah sponge gourds growing in my garden so those can be used as well.