This is again another easy DIY, which seem to be my speciality actually. It was inspired by this DIY by A Beautiful Mess, although it involves less components. All you need is a plain scarf and a Rub A Dub Sharpie, or other permanent-through-washing pen.
Using your Sharpie, simply draw stars on your scarf. I drew mine on either end in a band to create a star "trim", however the beauty of this is you can do what ever you want with what ever time you have. It is quite time consuming to draw stars all over your scarf however, so take that into consideration. I had grand plans which never eventuated, although I very much like the end result.
I used a scarf that was made of very thin material. It might be a thought to use a less flimsy material, because I did poke holes in my scarf with the fine tip of the Sharpie. Ooooops!
Happy scarf making!