The tabular cloisonné beads with the slotted holes are persuasive as obidome. But the football shaped beads have round holes and seem like they are going to flop around and abraid the ribbon.

The Kanzashi (hair ornament not pictured) is a good example of an opportunity for adaptation. I have seen important ojime with the hole reconfigured to fit a hair pin.

And in your examples of the obidome for sale in an Antiques Show, I can see a multi metal menuki -sword decoration- as well. This adaptation I have seen many times.

Notice how all of the obidome ornaments and ribbons are in good condition -as if they were seldom worn
-perhaps they were put together for collectors after the fashion for wearing them became obsolete.

Just Fred