I'd also love to find those chain stitch attachments. They are very rare, and unfortunately a lot of people that have grandma's machine that may have had them but don't know it. Often your best bet is to start looking around for people selling the machines in cabinets, and then go look through the drawers and see if they are there. I got most of my Singer embroidery attachments that way - with a machine and cabinet for way, way less than the attachments sell for on their own.