The birds also LOVE fabric scrap strips. One year I threw them all over the back yard (I'm surrounded by trees on 3 sides) and had the most colorful nests all over the place. The neighbors remarked on their colorful nest so it seems I decorated quite a few yards.
Right now I have a bunch of baby indigo buntings....prettiest blue I've ever seen. The adults were with them the first few days but no where to be seen now. Just those plump little babies.