I have the plan for my Boxes’ final size, determined by the number of triangles I could make from my dark blue. It was left over from a quilt I made a few years ago, & I had several pieces exactly 4.5” wide-serendipity! I cut 111 full triangles & had to piece #112 to make 56 boxes. The number I have means my quilt will be 7 rows across & 16 triangles long (or 8 box blocks). It should end up about the right size for a lap blanket for sitting on a couch or chair. Not for napping though-it’ll be too short for that!