Sesory walk made out of plastic breadboards and mountains of hot glue. The boards are covered with fine sandpaper, scrubbing sponges, some kind of foamy material used to keep rugs from slipping, a mop and flat glass stones.
Bubblewrap Paintbrush: Tape a square of bubblewrap to a TP roll. We added bubbles texture to under the sea paintings in a crayon resist -- turned out great. Never thought of making a paintbrush out of the bubblewrap