I save all my bobbin and cutoff threads in a box. I found a pattern to make ornaments by sandwiching the threads between water saluable stabilizer (spelling?), stitching all over, disolving the stabilizer then cutting out shapes, starching and ironing flat. Then hang. With alot of colors the ornaments look somewhat like lace. I don't have enough thread yet but getting there. They need alot of color, metalics, maybe some yarns for texture.