I've been using embroidery floss (6 strands) to sew on buttons. I want to make sure these buttons don't become loose and become and endangerment to Baby. The blue toothpick is holding the button away from the knitting so there is space to wrap the floss around it to make a shank. I also use small buttons on the reverse side to keep the knitting from pulling.
At first I used white button thread (top button) but thought of the idea of using floss to match the buttons a little better. I took the white thread buttons out.
Isn't this the picture of an angel? He is so beautiful!

