It would be interesting to have something that would work with the OBW labeled as being good for it. Though I read through a set of directions for it online yesterday and she showed different types of fabric and if they could or could not be used and I didn't particularly like any of them, I would never have chosen one of them and after seeing what the blocks would look like, I still wouldn't. I was impressed with the blocks made in this forum, they used some great fabrics that could make tons of different blocks.
You could always use the 'waste' fabric in a scrap quilt. Especially if you really love the fabric. As long as you have enough repeats for your blocks, the rest will more or less be usable.