Are you going to attach the log cabin squares to some other plain material in order to hang them? If you do, you could make a simple sleeve by folding over 4-5 inches of fabric and straight stitch a sleeve along the top. What I do is sew a, say, 3 in. sleeve, and then sew that in half and use the lower one, not the one on the edge, for the curtain rod. This gives a slight ruffle on top. Or you could just sew a sleeve on your log cabin blocks to hang them on the rod. Does this help any?