I saw a lady on Simply Quilts that pieced tiny bits of the same colors & hues together and just kept doing it until she had about a fat eighth size piece. Then she used those fat eighths to make a small wallhanging. The demo piece she showed was a sunflower so she had used greens, browns, yellows and some off-white. It looked really cool when she was finished. I suppose you could do the same thing with leaders & enders but I'd have to be really, really bored to sit and purposely sew all those itty bitty pieces together just to cut them up for a mosaic looking wallhanging but if you really wanted to make use of every scrap and prove how thrifty you can be--crumbs definitely prove it.