 With Ishida gone, the question mark over the shopping bag motif is likely to remain for good.Since his death in 2005, a large number of unpublished works have been uncovered in his home, which brings the estimated total of paintings he produced during his ten-year career as an artist to 186.In 2007, Ishida's family donated 21 of Ishida's works to the Shizuoka Prefectural Museum of Art (静岡県立美術館|Shizuoka-kenritsu Bijutsukan) in their hometown as a permanent exhibition.