I just ordered "TEN GEAR" to replace my current plate. Almost got "DRAG A 10" but decided it might attract too much attention. It's available in IL now.
The plate doesn't have to be related to the car. If your a veteran, why not your rank or unit name/# or the ship # you were on, and if it fits, combine that with a veteran plate.
That is what I did, I got a navy vet plate and put the ship # on it.
Another option is a favorite saying or phrase. My wife is a huge fan of the show big bang theory and she had this for about 5 years, until the show was cancelled, then she let it go.