Bones That Work Well For Flossing?

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In my quest to reduce the number of items I purchase, I have been thinking about dental floss.  Surely there are bones that could be used over and over for this?  Fish bones are probably too flimsy, but there must be larger animal bones that are strong, but not too big either.  I found one such bone in my lamb ribs, but I didn't think about using it as a toothpick until I had already thrown it out.