Summarize:

Find a metal clip that is smaller than your bow. Cut a small section of thin ribbon, heat seal the ends and hot glue it securely to the top of the clip. Press the underside of the bow onto the hot glue strip. Press down until you feel it is securely attached.
Choose either an alligator clip or a clasp barrette. Line the barrette if you choose. Pour a thin strip of hot glue over the top of the clip. Allow the bow to dry for 30 minutes before using it.