Some of these are so cute and no sew or very little sewing. Enjoy!
http://magazines.ivillage.com/countryliving/decorate/projects/photo/0,,709728_709729,00.html
http://magazines.ivillage.com/countryliving/decorate/projects/slideshow/0,,709728_709737,00.html
Make over your windows in just one weekend. Start with ready-made panels, then customize the look with a few simple embellishments you fashion yourself from everyday household items.