Total posts : 45366
I vote paper QSL cards. They leave something in the drawer for the next generation to discover. In my ham radio work, I send a real, glossy, printed QSL for every non-local contact, with a SASE. I like to fill boxes with the real thing.
My ham cards have a photo of the 1958 Edsel that we had for 13 years (finally traded it in on a Mustang in 2007 — the Ford dealer actually took it as a trade — and gave me far too much for it) and I also had some cards printed for Herman Munster — who was a ham, and one episode had a ham radio theme to it. The card and some info is at my old website:
Tim in Bovey