Plane: e-ticket. I can't remember when last I had a paper ticket. I fly a lot.<p>Train: subway card; on-demand ticket dispenser at station. Even when I use the Acela I don't need to print anything.<p>Show: uhm, they should accept electronic display (then I'll use my iPhone - last concert was Kylie Minogue, and I got a paper ticket on the 2nd hand market)<p>Article: physical magazine or online reading. I never make notes on the physical article (then I'd have to have a filing system to keep it)<p>Paper: send it to me in PDF or some other open format; I'll send review notes back electronically.<p>Other reading material: books?<p>For some people it may be more convenient to print stuff, but not for me. Paper =&#62; physical clutter.