It just so happened that the mug was sporting a device as the decoration. The call went out to the Herald community, and within minutes, the registered device was tracked tracked to the registered name associated with it. Once the SCA name was posted, somebody else on the group knew the person and tagged her in the post to retrieve her mug.
This was fantastic to witness and so very easy to track down if registered. It made my day and I wanted to share this cool story with you guys. See? Heraldry can be cool. :D
~Maddelena 'Raven' de Ricci