G.H.
http://lillyella.blogspot.com/2009/06/crafting-button-bra...
This is SO easy and inexpensive! I use white or black elastic @.39 a yard. Everyone has a box of buttons hanging around. Takes 20 minutes to sew. I use Nymo thread to make it stronger. Doubled quilting thread will work, too. I haven't used those little baby bracelet buttons with the letters stamped on them, but you just gave me a good idea!