A relatively easy way to do something themed might be to trace some simple Star Wars themed shapes onto freezer paper and scatter them around the quilt top (ironing the freezer paper to the top). Then do meander quilting/stippling on the rest of the top. After doing that, quilt an outline of each of the shapes before removing the freezer paper. You could probably do at least some light sabers and some R2D2 shapes, and maybe the letters to form "STAR WARS" in the center. I used this technique to make turtles on a quilt I made for my son, with turtles about 5" by 8" in size.
Another possibility would be to do meanders/stippling with the occasional light saber shape. If you look for meanders that alternate with specific shapes (e.g. hearts, circles, etc.), you should get an idea of what I mean. But if this is your first time doing machine quilting, I think quilting around freezer paper shapes would be easier.