Why not make a log cabin block that looks like this? http://www.hancocks-paducah.com/Item--i-M-42070-JR
Use the charm pack for the middle and the jelly rolls pieced around it.
The fabric is beautiful so I would keep the pattern fairly simple to showcase the fabric.
Actually, I considered this idea first, but then I wondered if it might look strange without the red centers. Then as I considered putting red centers, I thought it might spoil the effect of the blues an grays.
I really love the Log Cabin patterns, but would 2.5" strips be too wide to use?