Information here regarding this challenge.
Having just completed the finishing touches to my bag of squares, now named "Autumn Sonata", I came upon the abovementioned challenge while browsing Sharon B's Pintangle blog.
I used fabric from Interior Design sample books, a bit of creative recycling. The pattern I saw in a craft magazine, right now I can't remember which one.
I really had fun piecing the squares together, adding the embelishments, finally to end up with a useful gift for someone.