Cathy made them over ( I think) a couple of years as part of the blocks she makes each month in her Rainbow Scrap Challenge collection of blocks. Recently she showed the completed Spool Quilt which was amazing. Do take a look at it! Sorry I don't know how to direct you to the actual link - I don't have sufficient technical skills.
783 Spools: A Finish is the title of the post on Sunday 26th March 2017.
I haven't had much time for sewing since our return from NZ but I have cut out lots of pieces to make Spool blocks and have managed to squeeze in a little time to sew a few together.
I love the variety of fabrics, hoping to sew a few more together in the next day or two. Some of the background fabrics I have chosen have worked out more successfully than others.