Soap in a Sponge
Photography: Gentl and Hyers
Source: Martha Stewart Living, August 2001
Put soap shards and leftover hotel soap bars to good use.
Natural sea sponge
Use a utility knife to slice into the center of a natural sea sponge.
Then insert soap and lather up. Every last bubble will be surrendered. The soap will stay in place as it shrinks, adhering to the fibers of the sponge.