Here is a documented sighting in the wild of a "support our troops" ribbon magnet with the extra added cleverness of using the "negative" space in the loop to make a heart. This way the supporter can "heart" the USA at the same time.
I have also seen them with crosses in the "negative" space as well, but I have yet to capture one. I do plan on putting together the cladastics of this meme soon. As you can see, I am gathering data.
By the way, this van had two of these ribbon magnets in different colors. Of course, you can't just have one!