I have a number of shiny, ribbon-like scrunchies, in black, brown, gray, green.  I got them at icing.  Occaisionally I'll tie a ribbon to it to make a bow, or to braid a ribbon through my hair.  Not often, though.  I'm not a ribbon/bow sort of person.

The only way I could keep a ribbon in my hair is to attach the ribbon to something else that will stay in my hair.  I've tied or looped ribbons thru scruncies, covered elastics, barrettes and headbands.  I don't wear ribbons very often any more, but during my shoulder length and above days, I did like to tie a ribbon around my ponytail.

Thanks, gals!  I've found a small fabric-covered scrunchie the same colour of the ribbon that I can tie the ribbon onto, and once the ribbon's wrapped around it's hidden.  I like the idea of using a barrette - I'll have to look into getting one.  With thinner ribbon, I might be able to use a bobby pin - I think it's just trial and error.