Don’t even think about plopping a skinny floor lamp down in the middle of this marble and granite Shift end table by Chicago designer Felicia Ferrone. That’s surely one of the first ideas to pop into the heads of many people seeing it for the first time, but to fill the hole would be to miss the point. “The void in the center forces you to think about your own interaction with the piece,” says Ferrone. “It takes away an area where glasses and magazines might otherwise accumulate, convincing the user to think about returning the table to its natural form.” The Shift table, along with several other convention-busting pieces by Ferrone, are on view through November 7 in an exhibit called On Space at Volume Gallery’s temporary digs at 845 W. Washington Blvd., first floor.