Ever wonder what you can do with this little attachment? Using this foot has made a drastic difference in the ease of shirring, so I thought I would tell you about this obscure Singer Attachment. It's called a Shirring Foot, or sometimes referred to as the gathering attachment. By loosely hand-winding your bobbin with elastic thread you can instantly create shirred fabric with which to use for dress bodices, elasticized cuffs and more.
I suggest that when you pull your bobbin elastic thread up through the stitch plate that you also allow the upper needle thread to be pulled down through the attachment. Then, as you start out your rows be sure to hold both threads taut to secure the stitching row.
After you shirr the fabric, steam the stitched rows with the iron on heavy-steam. I just barely hold the iron over the fabric and the shirring shrinks up quickly creating elasticity. I love it!
Or forgo the elastic thread, use regular sewing thread in the bobbin and make a tactile quilt square for baby.