For foundations: phone book pages, tracing paper, old newspaper, newsprint roll ends from your local newspaper publisher, etc. old sheets, ugly fabrics that you are sure you will never use, old shirting or lightweight fabric from used clothing, thin muslin, etc. There are many possibilities. When the blocks are finished they need to be measured, trimmed and then assembled into a quilt top. They are then added to batting and backing and quilted or tied. They make wonderful gifts and are a good way of using up the scraps.