I glued three pieces of old grey wood together side-by-side and cut out a star with my jigsaw. The wording was hand painted and then I used hot glue to attach the tiny LED lights on the back. Two cross pieces at the top and bottom of the back help to bring the wood away from the wall to give room for the light to shine, and also space to hold the battery pack.
It really looks better in my person, especially in a dark room, but hopefully you get the idea.
15 1/2" x 14 1/2" available in my shop or by contacting me
I'll show another similar piece tomorrow.