I would suggest maybe a license plate frame, but not the gaudy ones you can buy at Pep Boys or like stores. Or you could tie somekind of ribbon around a mirror, or a bumper sticker.
There's not many suggestions I can give because most of them involve an antenna, which Camrys of your era do not have (they're in the back window).
There are certainly a lot of Camrys out there!
That's just my
Good luck!