Have you tried the moda bake shop? I LOVE this pattern
http://www.modabakeshop.com/2009/03/...ver-quilt.html you could simply sub. fabric in your stash or purchase fabric to match your turnovers instead of the moda yardage!
this pattern is really cute for turnovers and you could put something more wintery in the middle.
http://www.ericas.com/quilting/patterns/45290b.jpg
You could also do pinwheels! (I am obsessed with them lately!)