Interesting topic!
I say they are your ribbons. I like BJ's suggestion of a good quality photograph of the project with the actual ribbons for yourself, nice shallow box that can be displayed if wanted or simply stored easily and as a nice reminder if not. As a quilter and collector of objects, I would want the provenance/story of the awards for appraisal or just documentation purposes, and would be thrilled if someone had that ready for me with purchase and would probably forget about asking about it myself and kick myself later. If someone wanted to buy the ribbons I think that would have to be decided as a separate value/transaction and that you would have every right to refuse to sell.