Last week while visiting the remodeled (and just reopened) North Carolina Museum of Art, I found the perfect thing to do with all those unwanted spools of thread. This version of Mona Lisa was made by Devorah Sperber, using 5,184 spools of Coats& Clark thread spools. It is amazing (as is the museum)! There is a small round viewing sphere in front of it that when looked through, reverses the image. The artist's web-site is very interesting, as is the video. She has actually completed quite a few works with spools of thread, one of which is the Last Supper, using 20,736 spools!
It gives you a new appreciation of thread, among other things.