These are adorable !!! Mismatched buttons serve as the charming clasps on handmade napkin rings. You'll need shank buttons, which have holes on the back .
These are mother of pear buttons...Cute !
Thread a 12 inch length of cording through each shank, and tie its ends in a knot. Secure knot to shank with a needle and thread so that it will stay hidden behind the button.
Wrap cording around a folded napkin, looping it back over the button to secure.