Thats a good idea. I know that I look at my money. I see when they have the Wheresgeorge.com stamp on them.
I was putting the sigil of father Satan on the money I would get for a while. Right on the part where it says "in god we trust." I put it over the word god. I even made a rubber stamp to stamp it on. I know most people wouldn't know what his sigil means. I guess it would be meaningful to the people who matter.
If you have ever gotten a bill with fathers sigil right over word god on the back, it is probably one of mine.