Sounds like fabric panels is what you're describing. They come in all types of fabric for upholstery, fleece, jersey and cotton for quilting. Depending on what fabric they are--wallhangings, table toppers, dresser scarves, quilts, almost anything.
Try searching for big quilt blocks or medallion quilts if you're thinking about turning them into a throw or bed-size quilt. Basically you cut out the panel and make borders around it until it reaches the size you want.