Even though it would probably take a long time, would be awesome pendulum art if there was one for every element combination. Even though it looks quite simple, its probably my favorite design up there.
Actually, only twelve would need to be made. But the bottom(or top) would be left blank. As in transparent. That way, the code for the game can place your own mark symbol in the transparent space, and have it be cut in half by the rest of the image that isn't transparent.
But I think i enjoy the current pendulums most, unless pendulum were ever renamed to fit this art. Or this art were remade to include some kind of pendulum-like theme.
Also, great work on the art, vrt. Love seeing your stuff.