Butterfly Town has large 12" easy-to-piece blocks made from strips, squares and rectangles.  Choose large-scale prints for upper wings and medium to small-scale prints for the lower wings; a darker contrasting print or solid for the body and cornerstones.  A tone-on-tone or other subtle print works well in the background to show off the butterflies.

Finished sizes:

Baby - 44" Square
Lap - 44" x 57"
Bed - 57" x 83"