How about a totally wonky or varied width/pieced logs log cabin. Use the smallest as the centers.....Cut the 4.5 in half - ...sew some of those and some of the 4.5x8.5 (different fabrics) together end to end - and use for the "logs" in your block...adjusting the sizes as needed. Or maybe a pineapple block ?? Best of luck...looks like you have a nice collection there.