In a moment of perfect timing, my copy of Tula Pink's City Sampler book arrived (finally!) just as I finished putting these together. I've been not so patiently waiting for it to turn up, so I got stuck in straight away and made my first couple of blocks.
These little guys are totally addictive - they are 6.5" blocks so some pretty teeny piecing, but it is loads of fun picking fabric for each block. I think I'll make a few more tonight :o)