If your soaps become small enough to be replaced, instead of throwing the old bar of soap stick the old soap on the new soap by using some water and rubbing each
Suds Stick Soap Bar | Tubby Todd Bath Co.
Soap Stick - Speppermint Shave– Rinse Bath & Body
Meliora - Laundry Soap Stick – Cora Ball
Soap on a Stick! | Photo
This weird soap on a stick in my hotel in Krakow : r/mildlyinteresting