Or just stick them in a small net bag and use. You use them up and you get a scrubby.
Wow! That is an even better idea!
I did the soap thing one time just to see if it could be done then continued doing it but I like your idea better!
I also used to cut my own hair but the wife talked me into going to a barber shop but she cheated and used bait: She told me that the three barbers were young, healthy, beautiful shapely females. She wasn’t lying! I’ll never go back to cutting my own hair! ;-)
You can also use them as laundry soap if they are small.
Or sew two old washcloths together along three sides and slip them in. Sorta the net bag idea, but the washcloths can handle the tiniest pieces.