I decided I wanted a W marquee letter but the only ones that were available were either cheap reproductions or prohibitely expensive. It's just a thing to put on the shelf, after all, and not worth spending hundreds of dollars on.
After kicking the idea around for awhile I came up with a plan to build a cheaper and cooler one from what I'd seen available. My marquee W letter is constructed from various materials including 3/4" plywood, aluminum flashing, LEDs, liquid nails, and ping pong balls.
I used velvet paint on the metal sides to make it look like old, corroded metal. The background is black and white crackle paint, which also makes it look old. The finished product lights up but is not bright enough to bother people in the room.