I measured out how much ribbon I would need, and then trimmed the end of the ribbon to a point, so it would fit through the hole, and strung the ornaments on. The ribbon frays on the end, but its not a big deal, I just trimmed it when I was done. Since the ornaments are so light, they stay put on the ribbon wherever you place them. The I just used some extra tulle I had on hand to tie it in place on the banister.
I LOVE the way it turned out, and it was so quick and easy to do. (I know, I know. It would look so much better on a white or black banister, but oh well, we're renting.) I also like that it's kid-friendly, so I don't have to worry if my girls play with it a little. If I see more plastic mini-ornaments on after-Christmas sales, I will definitely snatch them up. I think these would be cute strung on the tree, or hung across the windows. Everywhere!