Developer Boris Smus came up with this super minimalist way of sharing his email address, Twitter username, and website URL. He writes,
I’m ordering a personal set of moo mini cards. These are small, two sided prints. One side contains an image, and the other contains contact information. On the image side, I’m putting snippets of travel photography. The other side is by default a conventional list of contact information, but moo conveniently allows it to be replaced by a custom image.
If you have an email address that lets you do the same thing, this could be a neat way to pass your contact info to prospective clients.