A thin walled 3D print with hexagonal indentations.
https://files.mastodon.social/media_attachments/files/111/072/193/691/504/757/original/daa90035e76a8827.jpeg
I did have another swing at it. The first one I’d hoped to slip intact around a stiffer carrier. This one I made wider, and corrugated, so it printed better.
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