All it took was a package of mini blue lights from Target, a star shape that I cut out of foam core board (the board is white on one side, black on the other) and some black tape to keep the lights pointing in the direction where I want them.
So pretty when the sun goes down.
And yes, there is a cord that hangs down and plugs into an outlet but I took some artistic license and deleted it from the photo for the sake of art!