My family and I enjoy reading, and sometimes having to 'figure out' vanity license plates. A search of this board found two mentions of flyer-related license plates: UAL FLYER http://www.flyertalk.com/forum/Forum50/HTML/004788.html and AA ORD http://www.flyertalk.com/forum/Forum71/HTML/002004.html
I would invite people to post here license plates in 3 classes:
1. A plate that you have.
2. A plate that you've seen.
3. A plate that you think would be interesting

For example, last summer, UAL8.