Circular embroidery attachments from Jaycotts.
These machine attachments are perfect for adding circular embelishing to clothing, table wear and anything else you can think of. They make beautiful quilts and make circular applique incredibly simple.
I also like the idea of circular pockets and felt coasters and tablemats.
This is the BROTHER CIRCULAR EMBROIDERY ATTACHMENT (There is a video showing it in use on the above link.)