Maybe some sort of mascot.
Sorry, I couldn't help myself joking with you. It is April Fool's day and I am feeling a bit foolish. I didn't mean to mess up your thread.
A quick opinion on maker's marks.
Simple and readable is best in my opinion.
There are a few makers I wont name who have incorporated an image into their mark. Some might think it cool, but a lot won't.
My idea of a mark should be to ID the maker and not detract from the look of the knife.
One exception that I like is the stylized BF that Burt Foster uses. Only problem is if someone is not fluent in custom knives they won't know who the maker is.
Unless there is another Roush out there, I would think your last name on the blade would suffice.
This is just my 2 cents, but I feel your style is unique enough that people would recognize the knife and then be able to confirm it is one of yours by the name stamped on it.