Idea I had for suicide was to write a suicide note on a canvas in masking fluid, shoot so the blood covered it, and leave a note that the message was on the canvas -- just rub the fluid off. Not sure how evenly distributed the blood would be. They might need to smear it around a bit first. I suppose the message could just be: "R.I.P. (Name. Date of Birth - Date of Death) Please hang this note in a gallery. Thank You."