Just Corks makes several items from wine corks.
You can try a flat or raised wreath. The raised one looks more natural to me, that is, if cork wreaths can look natural.

If you’re interested in making your own, but don’t have lots of wine corks, Just Corks sells bags of 100 for $20. (Or ask a restaurant for theirs for free.) It’s unclear to me whether these corks have been used. They just say that the corks come from various wineries. I think used corks would add a bit more character, and make these true junk creations.

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