What I would do is just sew them all together. It would end up being a controlled scrappy of 2 1/2" blocks. Don't put them in any order, just random. If you have 4 patch, just add to it, 9 patch, just keep adding. I just finished a quilt that is all the same color scheme, but boy you can't see a pattern in it and I love it. Your blocks don't all have to be the same size. You just need to end up with a square or rectangle top. And if it's the same color line, I bet it would be pretty. Good luck, and post pictures.