Blank Bumper Stickers
Blank bumper stickers are the way to go if you're going to use a bumper sticker maker or printer to put text on them. But you have another option - putting blank bumper stickers on your car as they are, BLANK! It's a great idea in the tradition of the notorious postmodernist John Cage. John Cage composed a piece of music called 4'33 in which no music notes are played at all. It's a matter of personal taste and sense of humor, but a blank bumper sticker strikes many as a humorous bumper sticker. Because really, why did you put that there!?