I actually used my long-dormant Yahoo! messenger username to activate a Flickr account just so I could order some Moo Minicards. They’re US$20 for 100, including free international shipping.
Business cards are a great promotional tool, and especially useful as a distracting device when punters approach you mid-set. I have a couple of designs for different occasions, but Moo’s double-sided, full colour cards seem much more relaxed and friendly.
The Moo Flickr Group contains plenty of action shots and positive feedback.
Here are mine http://www.flickr.com/photos/pixelsumo/260079821/
Those look fantastic, Chris.
Okay, I'd better see if I can pull some together … these are really terrific.