Extra Christmas lights can be used in a number of creative ways. You could wrap them around trees or bushes in your yard for a festive display, string them up in your bedroom to create a cozy atmosphere, or use them to decorate a window to bring the holiday spirit inside. You could also use them to decorate a Christmas tree, or even make a Christmas light wreath to hang in your living room. No matter how you choose to use them, extra Christmas lights are sure to add some festive cheer to any setting.