As of yet we have not on our own or by way of commission created an X mosaic sign, but maybe Xenial would be a fine place to start. It is all about welcoming strangers. Being xenophobic means to be fearful of the new, the strange. If you are truly xenial you offer a gift.
While it may be nice if 100% of the people who entered our booth were friends, the truth is most are strangers to us. Do we gift them all with a smile, a friendly welcome, a gratitude that they are taking the time to examine our art?