Actually over the past month I've turned quite a few hollowforms, just yesterday I roughed out five new pieces from London Plane between 6" - 8" in width.
This one however has some "nice figure and spalting" so I felt it worthy of posting, Turned from a small crotch piece of London Plane, measures 4 1/2"h x 3 1/2"w with a wall thickness of 1/8" or less and an opening of 1/2"