After Picasso gets the money from Gomez, he pockets it. It suddenly reappears in his hand when he passes it on to Morticia.
Just before Moriticia cracks the rock she uses to sculpt Lurch, a large crack is already visible where it will break.
When Morticia dribbles water from the sponge on the rock, it makes a noise like much more water being poured on a flat surface.