I have a lot of peach in my stash - lots of fat quarters and bigger yardage. Knowing it was there in case I needed it, I first went to my scraps. I found two different pieces I could use:
What I've started doing with this challenge is next look for a print with multiple colors in it that include the color of the week. From that print, I find several other coordinating fabrics, since I want to have at least 4 to make good 5-sided log cabins. (That's what I call the centers of the stars - it's sort of a controlled "making" fabric process.)
Then I made the center squares, one large and one small, to end up with a 6.5" star and a 12.5" star.