"Here you go," I said, and gave them the ribbons which I unrolled with a flourish.
"What for?" they asked.
"Anything," I said. You can use them for playing, or you can decorate something, or you can cut them up and use them for a craft. Whatever you want."
They loved them. They initially used them as gymnasts' twirling ribbons, then various other things, and after awhile A cut hers into smaller strips and made flags with straws and sticky tape, and that was her ribbon all used up.
M still has hers, and she still plays with it a lot. It is a rope, a scarf, a swing, a tightrope, a bell rope, a hair ribbon, a belt, a weapon, a blindfold. Today she got me to wrap it in a bow around a rolled up piece of paper to make a scroll.