As stated somewhere above, LSS can be pieced together for custom sizes and shapes. Every piece is usable, no matter how small.
Scraps
Larger scraps can be turned, cut and pieced into free-form shapes. LSS will hold with edge-to-edge gluing, stapling, cement, tarring, or sintering with lead. You won't be able to stitch through the latter three, but they are interesting to note.