I had a three ring binder that I kept for years until I moved to Nashville (I think it is in storage right now). This is what I included in the book. A completed block list--each new block I tried, I wrote it down. List of quilts in progress...quilt pattern name, fabric bought, etc(no swatches which I now find was stupid). BOMs--when I received kits, when finished, when top finished, etc...Not a great system but it kept some of my projects organized.